Common Mental Health Terms Explained in Plain English

Anxiety Disorder

A category of mental health conditions characterized by excessive, persistent fear or worry that interferes with daily life. Common types include generalized anxiety disorder, panic disorder, and social anxiety disorder. All are distinct from ordinary stress or nervousness.

Cognitive Distortion

An inaccurate or exaggerated thought pattern that can reinforce negative emotions. Examples include catastrophizing (assuming the worst will happen) and black-and-white thinking (seeing situations as all good or all bad). Identifying these patterns is a core part of many therapy approaches.

Neuroplasticity

The brain's capacity to reorganize itself by forming new neural connections throughout life. This concept underpins many psychological therapies, suggesting that thought patterns and emotional responses can change with sustained effort and the right support.

Psychotherapy

A broad term for structured, evidence-based talk-based treatments delivered by trained professionals. It encompasses many specific modalities — such as CBT, DBT, and psychodynamic therapy — each with its own focus and methods.

Mood Disorder

A class of mental health conditions primarily affecting a person's emotional state. Major depressive disorder and bipolar disorder are the most commonly diagnosed mood disorders. Diagnosis and treatment require professional assessment.

Trauma

In a psychological context, trauma refers to the lasting emotional impact of a distressing event or series of events that overwhelms a person's ability to cope. Trauma responses vary widely; not everyone exposed to a difficult event develops a clinical condition such as PTSD.

Resilience

The capacity to adapt and recover after adversity, stress, or difficulty. Resilience is not a fixed trait — research suggests it can be built over time through supportive relationships, coping skills, and other factors.

Dialectical Behavior Therapy (DBT)

A structured form of psychotherapy that combines cognitive-behavioral techniques with mindfulness practices. Originally developed for borderline personality disorder, DBT is now used for a range of conditions involving intense emotions or self-destructive behaviors.

Comorbidity

The presence of two or more health conditions in the same person at the same time. In mental health, comorbidities are common — for example, anxiety and depression frequently co-occur. Comorbid conditions may interact and require coordinated treatment.

Psychiatrist

A medical doctor (MD or DO) who specializes in diagnosing and treating mental health conditions. Unlike most psychologists and therapists, psychiatrists are licensed to prescribe medication.

PTSD (Post-Traumatic Stress Disorder)

A mental health condition that can develop after exposure to a traumatic event. Symptoms may include intrusive memories, avoidance behaviors, negative changes in mood or thinking, and heightened reactivity. PTSD is diagnosable and treatable.

Mindfulness

The practice of paying deliberate, non-judgmental attention to the present moment. Mindfulness-based approaches are incorporated into several evidence-supported therapies, including MBSR (Mindfulness-Based Stress Reduction) and MBCT.