Mental health glossary

Mental health terms, explained plainly

242 terms — diagnoses, therapy approaches, medications and the words that come up in a session, written without jargon. Look up anything you heard from a therapist, read on a prescription or saw in a report.

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AbreactionAbreaction is a psychoanalytic concept wherein a person re-experiences a previously repressed traumatic event, releasing pent-up emotions linked to that experience.Acute Stress Disorder (ASD)Acute Stress Disorder is an anxiety condition that develops shortly after a traumatic event.AddictionAddiction is a chronic condition characterized by compulsive substance use or engagement in behaviors (e.g., gambling) despite harmful consequences.Adjustment DisorderAdjustment Disorder is a stress-related condition where emotional or behavioral symptoms arise in response to a significant life change or stressor (e.g., divorce, job loss).Adrenal Fatigue“Adrenal Fatigue” is an informal term suggesting that chronic stress leads to the overuse and eventual “burnout” of adrenal glands.AffirmationsAffirmations are positive, motivational statements used to challenge negative thought patterns and foster a supportive internal dialogue.AgoraphobiaAgoraphobia is an anxiety disorder involving intense fear and avoidance of situations or places where escape might be difficult, or help might not be available, should an anxiety attack occur.AlexithymiaAlexithymia refers to difficulty recognizing, understanding, and describing one’s own emotions.AmbivalenceAmbivalence is the state of holding mixed or conflicting feelings about a person, situation, or decision.Anger ManagementAnger Management comprises strategies and techniques designed to control the emotional and physiological responses to anger triggers.AnhedoniaAnhedonia is the reduced ability or inability to experience pleasure from activities once found enjoyable.Anorexia NervosaAnorexia Nervosa is an eating disorder marked by extremely restricted food intake, intense fear of weight gain, and a distorted body image.AntidepressantsAntidepressants are a broad class of medications used to treat depression, anxiety, and other mental health conditions.AntipsychoticsAntipsychotics are medications primarily prescribed to manage psychosis, including symptoms such as delusions and hallucinations.AnxietyAnxiety is characterized by persistent worry, nervousness, or fear about current or future events.Art TherapyArt Therapy is a form of psychotherapy that uses creative processes, such as painting, drawing, or sculpting, to help individuals express emotions, explore experiences, and develop self-awareness in…Asperger SyndromeAsperger Syndrome historically referred to a form of Autism Spectrum Disorder (ASD) characterized by difficulties with social interaction, restricted interests, and repetitive behaviors—often…Assertiveness TrainingAssertiveness Training is a therapeutic and personal development approach focusing on helping individuals communicate their feelings, needs, and rights openly and respectfully without resorting to…Attachment TheoryAttachment Theory examines how the bond (attachment) formed between an infant and a primary caregiver influences a person’s emotional development and relationships throughout life.Attention Deficit Hyperactivity Disorder (ADHD)ADHD is a neurodevelopmental disorder characterized by persistent patterns of inattention, hyperactivity, and impulsivity that interfere with functioning or development.Autism Spectrum Disorder (ASD)Autism Spectrum Disorder is a developmental condition characterized by differences in social communication and interaction, alongside restricted, repetitive patterns of behavior or interests.Avoidant Personality DisorderAvoidant Personality Disorder is characterized by social inhibition, extreme sensitivity to negative evaluation, and a pervasive sense of inadequacy.

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Behavior TherapyBehavior Therapy is a broad term for types of therapeutic approaches that focus on modifying observable behaviors, rather than delving deeply into unconscious processes.BenzodiazepinesBenzodiazepines are a class of psychoactive drugs primarily used for their sedative, anxiolytic (anti-anxiety), anticonvulsant, and muscle-relaxant properties.BereavementBereavement is the period of grief and mourning after a loss, particularly following the death of a loved one.Binge Eating Disorder (BED)Binge Eating Disorder involves recurrent episodes of consuming large quantities of food in a short period, accompanied by feelings of loss of control, shame, or guilt afterward.BiofeedbackBiofeedback is a technique in which individuals learn to influence physiological processes that are typically involuntary, such as heart rate, muscle tension, and skin temperature.Bipolar DisorderBipolar Disorder is a mood disorder characterized by manic (or hypomanic) episodes —periods of elevated mood, high energy, or irritability—and depressive episodes with low mood, fatigue, and…Body Dysmorphic Disorder (BDD)Body Dysmorphic Disorder is a mental health condition in which a person becomes excessively preoccupied with perceived flaws in their appearance.Borderline Personality Disorder (BPD)Borderline Personality Disorder is characterized by persistent instability in mood, self-image, and interpersonal relationships.Brief TherapyBrief Therapy refers to time-limited psychotherapy approaches designed to produce positive change in fewer sessions than traditional therapies.Bulimia NervosaBulimia Nervosa is an eating disorder characterized by recurring episodes of binge eating followed by compensatory behaviors such as self-induced vomiting, fasting, excessive exercise, or misuse of…BurnoutBurnout is a state of emotional, mental, and physical exhaustion brought on by prolonged or repeated stress—often work-related, though it can affect anyone in high-demand roles (e.g., caregivers…

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Caffeine-Induced AnxietyCaffeine-Induced Anxiety refers to heightened nervousness, restlessness, or panic-like symptoms triggered by excessive caffeine intake.CatatoniaCatatonia is a psychomotor disturbance that can manifest as extreme motor immobility (e.g., stupor) or excessive motor activity that appears purposeless.Chronic StressChronic Stress is the prolonged and constant feeling of stress that can stem from ongoing pressures or hardships—such as challenging work conditions, financial strain, or persistent family conflict.Clinical PsychologyClinical Psychology is a branch of psychology focused on diagnosing and treating mental, emotional, and behavioral disorders.Cognitive Behavioral Therapy (CBT)Cognitive Behavioral Therapy is a structured, time-limited psychotherapy that focuses on identifying and changing unhelpful thoughts and behaviors.Compassion FatigueCompassion Fatigue, also known as Secondary Traumatic Stress, occurs when caregivers or professionals (e.g., therapists, nurses, social workers) become emotionally and physically exhausted due to…CompulsionA Compulsion is a repetitive behavior or mental act that a person feels driven to perform in response to an obsession (intrusive thought) or according to rigid rules.Conduct DisorderConduct Disorder is a persistent pattern of violating societal norms and the rights of others.CounselingCounseling is a professional relationship in which a trained counselor helps individuals, couples, or groups address personal challenges, develop coping strategies, and improve mental and emotional…Crisis InterventionCrisis Intervention involves urgent, short-term psychological care aimed at stabilizing and supporting individuals in acute distress (e.g., suicidal ideation, severe panic attacks, or trauma).CyclothymiaCyclothymia (Cyclothymic Disorder) is a milder yet chronic mood disorder characterized by fluctuations between low-level depressive symptoms and hypomanic-like symptoms that don’t meet the full…

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DeliriumDelirium is an acute and often fluctuating disturbance of consciousness and cognition.Delusional DisorderDelusional Disorder is characterized by one or more persistent delusions (fixed false beliefs) lasting at least one month, without other significant psychotic symptoms commonly seen in schizophrenia…DementiaDementia is a progressive decline in cognitive function severe enough to interfere with a person’s ability to perform daily activities.Dependent Personality DisorderDependent Personality Disorder involves a pervasive psychological dependence on others.Depersonalization/DerealizationDepersonalization/Derealization involves persistent or recurrent feelings of detachment.DepressionDepression (Major Depressive Disorder) is a mood disorder characterized by persistent sadness, loss of interest (anhedonia), and a range of cognitive and physical symptoms.Dialectical Behavior TherapyDialectical Behavior Therapy is an evidence-based psychotherapy developed by Dr.DisassociationDisassociation (often spelled dissociation ) is a mental process where a person disconnects from their thoughts, feelings, memories, or sense of identity.Dissociative Identity Disorder (DID)Formerly known as Multiple Personality Disorder, Dissociative Identity Disorder is characterized by the presence of two or more distinct identity states (referred to as “alters”) that recurrently…Drug AbuseDrug Abuse (also referred to as Substance Abuse) involves the improper or hazardous use of legal or illegal substances (e.g., prescription medications, illicit drugs, alcohol) that leads to…DysthymiaDysthymia—currently referred to in the DSM-5 as Persistent Depressive Disorder (PDD) —is a chronic form of depression characterized by a consistently low mood that lasts for at least two years in…

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Eating DisordersEating Disorders are serious conditions characterized by persistent disturbances in eating behavior, body image, and/or weight regulation.Electroconvulsive TherapyElectroconvulsive Therapy is a medical procedure used to treat severe psychiatric conditions—most commonly severe depression—by inducing controlled seizures via electric currents passed through the…Emotion-Focused Therapy (EFT)Emotion-Focused Therapy is a therapeutic approach that helps individuals become aware of, regulate, and transform distressing emotional states.Emotional AbuseEmotional Abuse involves the systematic use of words and behaviors to manipulate, control, or belittle another person’s sense of self-worth or emotional well-being.Emotional ExhaustionEmotional Exhaustion is a state of feeling overwhelmed and drained by prolonged stress—often stemming from work (burnout), caregiving roles, or chronic interpersonal conflict.Emotional VentingEmotional Venting is the process of expressing intense feelings—anger, sadness, frustration—in order to relieve inner tension.EmpathyEmpathy is the ability to understand and share the feelings of another person.EncopresisEncopresis is a condition in which a child (generally older than 4) repeatedly defecates in inappropriate places (e.g., clothing, floor).EnuresisEnuresis refers to repeated involuntary or intentional urination in inappropriate places (e.g., clothing, bed) beyond the developmental age at which bladder control is expected (usually age 5 or 6…Exposure TherapyExposure Therapy is a form of behavioral therapy designed to help individuals face and overcome anxiety or fear by gradually exposing them to the feared object, situation, or memory in a safe and…Expressive Arts TherapyExpressive Arts Therapy uses creative modalities—such as art, music, dance/movement, drama, and writing—to facilitate emotional expression, self-discovery, and personal growth.Eye Movement Desensitization and Reprocessing (EMDR)EMDR is a psychotherapy approach developed by Francine Shapiro, primarily used to help individuals heal from traumatic experiences, PTSD, and other distressing life events.

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HallucinationsHallucinations are sensory experiences—auditory, visual, tactile, olfactory, or gustatory—that appear real but are not actually present in the environment.HikikomoriHikikomori is a Japanese term describing severe social withdrawal, where individuals—often adolescents or young adults—confine themselves to their homes (or even a single room) for months or years…Hoarding DisorderHoarding Disorder is characterized by persistent difficulty discarding or parting with possessions, leading to cluttered living spaces that compromise their intended use.Holistic TherapyHolistic Therapy (or Holistic Psychotherapy) takes a whole-person approach to treatment, integrating the mind, body, and spirit.HopeHope is the feeling or belief that positive outcomes, or improvements in one’s situation, are possible.Hospice CareHospice Care provides comfort-focused support to individuals with terminal illnesses (and their families), typically when curative treatments are no longer pursued.Humanistic PsychologyHumanistic Psychology is an approach that focuses on individual potential, personal growth, and self-actualization.HypnotherapyHypnotherapy uses guided relaxation, intense concentration, and focused attention to achieve a heightened state of awareness (hypnosis).Hypochondriasis (Illness Anxiety Disorder)Hypochondriasis, now more commonly referred to in DSM-5 as Illness Anxiety Disorder (or sometimes Somatic Symptom Disorder if physical symptoms are prominent), is characterized by excessive worry…HypomaniaHypomania is a milder form of mania characterized by elevated or irritable mood, increased energy, and heightened activity levels.

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Major Depressive DisorderMajor Depressive Disorder (MDD) is a mood disorder marked by persistent feelings of sadness, loss of interest (anhedonia), and a range of cognitive and physical symptoms that impair daily functioning.Maladaptive BehaviorMaladaptive Behavior refers to actions or tendencies that inhibit a person’s ability to adjust healthily to particular situations.MalingeringMalingering involves faking or exaggerating psychological or physical symptoms for secondary gain (e.g., financial compensation, avoiding work or legal consequences).ManiaMania is a state of abnormally elevated or irritable mood, arousal, and heightened energy/activity levels.Medical PsychologyMedical Psychology applies psychological principles to the understanding and treatment of physical health conditions.Mental Health StigmaMental Health Stigma is the negative attitude or discrimination toward individuals with mental health conditions.MindfulnessMindfulness is the practice of maintaining a nonjudgmental, moment-to-moment awareness of one’s thoughts, emotions, bodily sensations, and surrounding environment.Mood StabilizersMood Stabilizers are medications primarily used to treat mood fluctuations in Bipolar Disorder and sometimes in certain types of depression.Motivational InterviewingMotivational Interviewing (MI) is a client-centered counseling style that helps individuals explore and resolve ambivalence about behavioral changes (e.g., substance use, diet/exercise habits).Multifactorial ModelThe Multifactorial Model in mental health posits that psychological conditions and behaviors result from the interplay of multiple factors—biological (e.g., genetics, neurochemistry), psychological…Munchausen SyndromeMunchausen Syndrome (also known as Factitious Disorder Imposed on Self ) is a psychological condition in which an individual repeatedly acts as if they have a physical or mental illness by…Music TherapyMusic Therapy is a clinical and evidence-based use of music interventions to accomplish individualized goals within a therapeutic relationship.

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Narcissistic Personality Disorder (NPD)Narcissistic Personality Disorder is characterized by a pervasive pattern of grandiosity (in fantasy or behavior), an excessive need for admiration, and a lack of empathy.NarcolepsyNarcolepsy is a chronic sleep disorder marked by overwhelming daytime drowsiness and sudden “sleep attacks.” It can greatly disrupt daily activities, potentially posing safety risks (e.g., if one…Negative Automatic ThoughtsNegative Automatic Thoughts are the involuntary, reflexive beliefs and self-statements that occur in response to certain situations—often colored by cognitive distortions (e.g., “I’m a failure,”…NeurofeedbackNeurofeedback (also called EEG Biofeedback) is a therapeutic technique in which individuals learn to self-regulate their brain activity by receiving real-time feedback via electroencephalogram (EEG).NeuropsychologyNeuropsychology is the study of the relationship between brain function and behavior.NeuroticismNeuroticism is a personality trait characterized by a tendency to experience negative emotions—such as anxiety, fear, worry, anger, frustration—more intensely and frequently than the average person.Night TerrorNight Terrors (Sleep Terrors) are intense episodes of fear during sleep, often accompanied by screaming, sweating, and rapid heart rate.Nightmare DisorderNightmare Disorder involves recurrent, distressing dreams that are vividly recalled and often center around threats to one’s safety or well-being.Nonverbal Learning Disorder (NVLD)Nonverbal Learning Disorder is a neurodevelopmental condition characterized by difficulties in spatial, visual-motor, and social skills.NorepinephrineNorepinephrine (noradrenaline) is both a hormone and a neurotransmitter involved in the body’s fight-or-flight response.NSSI (Non-Suicidal Self-Injury)Non-Suicidal Self-Injury refers to self-inflicted harm (e.g., cutting, burning) carried out without the intention to die.

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Panic AttackA Panic Attack is a sudden surge of intense fear or discomfort that reaches a peak within minutes, accompanied by physical and cognitive symptoms such as a pounding heart, sweating, trembling…Panic DisorderPanic Disorder is characterized by recurrent, unexpected panic attacks and ongoing worry about having additional attacks or their implications (e.g., fear of losing control).ParanoiaParanoia involves persistent, irrational suspicions or mistrust of others.Pervasive Developmental Disorder (PDD)Pervasive Developmental Disorder (PDD) was once an umbrella term in the DSM-IV to describe a group of conditions involving delays in socialization and communication.PhobiaA Phobia is an intense, persistent, and disproportionate fear of a specific object, situation, or activity, leading to active avoidance or distress that interferes with normal functioning.Play TherapyPlay Therapy is a form of psychotherapy primarily used with children.Post-Traumatic Stress Disorder (PTSD)PTSD is a trauma- and stressor-related disorder that can develop after experiencing or witnessing life-threatening events (e.g., combat, natural disaster, sexual assault).Postpartum DepressionPostpartum Depression is a severe form of clinical depression occurring in mothers (and sometimes fathers) following childbirth.PsychoanalysisPsychoanalysis, developed by Sigmund Freud, is a theoretical framework and therapeutic method aiming to uncover and resolve unconscious conflicts, desires, and defense mechanisms.PsychodramaPsychodrama is an experiential form of therapy where individuals enact real-life or imaginary scenarios in a group setting.PsychosisPsychosis is a condition where an individual loses touch with reality.Psychosomatic SymptomsPsychosomatic Symptoms are physical symptoms that arise or worsen due to psychological factors like stress, anxiety, or trauma, rather than a purely organic or medical cause.PsychotherapyPsychotherapy (also called “talk therapy”) is a broad category of interventions where a trained mental health professional helps individuals understand their thoughts, feelings, behaviors, and…

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Schizoaffective DisorderSchizoaffective Disorder is a chronic mental health condition featuring symptoms of schizophrenia (hallucinations, delusions, disorganized thinking) alongside significant mood disorder symptoms…SchizophreniaSchizophrenia is a severe mental disorder characterized by delusions, hallucinations, disorganized thinking/behavior, and negative symptoms (reduced emotional expression or motivation).Seasonal Affective Disorder (SAD)Seasonal Affective Disorder is a type of depression that follows a seasonal pattern, most commonly occurring in winter months when daylight is reduced.Self-CompassionSelf-Compassion involves extending understanding, kindness, and support to oneself in instances of pain or failure, rather than harsh self-criticism.Self-EfficacySelf-Efficacy is the belief in one’s ability to successfully execute the behaviors required to produce desired outcomes.Self-EsteemSelf-Esteem is an individual’s subjective evaluation of their own worth.Self-HarmSelf-Harm (also called Non-Suicidal Self-Injury, or NSSI) involves intentionally injuring one’s own body without the intent to end one’s life.Self-MedicationSelf-Medication refers to the use of substances (alcohol, drugs) or behaviors (e.g., overeating, excessive gaming) to relieve mental health symptoms such as anxiety, depression, or stress.Self-TalkSelf-Talk is the internal dialogue or “inner voice” that runs through one’s mind.Separation Anxiety DisorderSeparation Anxiety Disorder involves excessive fear or anxiety about being away from home or attachment figures (e.g., parents).SerotoninSerotonin is a neurotransmitter that helps regulate mood, appetite, sleep, and various other functions.Service Dogs for Mental HealthService Dogs for Mental Health are specially trained canines that assist individuals with psychiatric disabilities (e.g., PTSD, severe anxiety, panic disorder).Sleep DisordersSleep Disorders encompass a variety of conditions that affect sleep quality, timing, or duration.Social Anxiety DisorderSocial Anxiety Disorder is marked by intense fear or anxiety about social or performance situations where one might be scrutinized, judged, or embarrassed.Solution-Focused Therapy (SFT)Solution-Focused Therapy (also known as Solution-Focused Brief Therapy or SFBT) emphasizes identifying and building upon existing strengths and resources to create solutions rather than dissecting…Somatic ExperiencingSomatic Experiencing is a body-oriented therapeutic approach to healing trauma and stress disorders, developed by Dr.Somatic Symptom DisorderSomatic Symptom Disorder involves one or more chronic physical symptoms (e.g., pain, fatigue) that cause excessive thoughts, feelings, or behaviors related to the symptoms.SSRI (Selective Serotonin Reuptake Inhibitor)SSRIs are a class of antidepressants that block the reabsorption (reuptake) of serotonin in the brain, increasing its availability in the synaptic cleft.StigmaStigma in mental health refers to negative attitudes, beliefs, and discrimination directed toward individuals with mental health conditions.Stress ManagementStress Management encompasses a variety of techniques and lifestyle changes aimed at reducing chronic stress and its negative impact on mental/physical health.StressorA Stressor is any event, situation, or thought that triggers stress.Substance Use DisordersSubstance Use Disorders involve the recurrent use of alcohol or drugs leading to clinically significant impairment, health problems, or distress.

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Talk TherapyA general term for psychotherapy in which a person discusses concerns and emotional issues with a mental health professional.TeletherapyTeletherapy is the provision of mental health services via remote technology—like video calls, phone calls, or chat platforms—rather than in-person sessions.TemperamentTemperament refers to the innate aspects of an individual’s personality—such as emotional reactivity, sociability, and self-regulation—often observable in early childhood.Therapeutic AllianceThe Therapeutic Alliance (or Working Alliance) is the collaborative bond between client and therapist, encompassing mutual trust, agreement on therapy goals, and commitment to therapeutic tasks.TherapyTherapy—often synonymous with psychotherapy—encompasses structured mental health interventions led by licensed professionals, aiming to improve emotional well-being, behavior, and overall functioning.Tic DisordersTic Disorders involve sudden, rapid, repetitive movements or vocalizations (tics).TMS (Transcranial Magnetic Stimulation)Transcranial Magnetic Stimulation is a non-invasive procedure that uses magnetic fields to stimulate nerve cells in specific brain regions.Toxic StressToxic Stress is an intense and prolonged stress response without adequate support or resources, often resulting from persistent adversity (e.g., abuse, neglect, extreme poverty).Trauma-Focused CBTTrauma-Focused Cognitive Behavioral Therapy (TF-CBT) is a specialized therapy model designed to help children, adolescents, and their caregivers process and cope with the aftermath of traumatic…Trauma-Informed CareTrauma-Informed Care is an approach where service providers acknowledge the widespread impact of trauma, recognize its signs and symptoms, and integrate this understanding into policies and practices…TrichotillomaniaTrichotillomania (Hair-Pulling Disorder) involves a recurrent, irresistible urge to pull out one’s hair, resulting in hair loss.

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