Evidence-Based Supplement & Herb Guides

Frontal lobe disorder Overview and Key Warning Signs

Learn what frontal lobe disorder means, including key symptoms, behavioral signs, causes, risk factors, diagnostic context, and complications that may require urgent evaluation.

A frontal lobe disorder is not usually one single disease. It is a pattern of changes that can happen when the frontal lobes of...

Fregoli Delusion Explained: Symptoms, Causes, and Risks

Learn what Fregoli delusion is, how its symptoms and signs appear, what conditions may cause it, and when sudden misidentification beliefs may need urgent evaluation.

Fregoli delusion is a rare form of delusional misidentification in which a person believes that different people are actually one familiar person in disguise....

Free-Floating Anxiety Overview: Symptoms, Causes, and Complications

Free-floating anxiety is persistent worry or unease that is not tied to one clear trigger. Learn how it relates to generalized anxiety, common symptoms, risk factors, complications, and diagnostic context.

Free-floating anxiety is a persistent sense of worry, tension, or unease that does not seem attached to one clear trigger. A person may feel...

Fetishistic Disorder Overview and Diagnostic Criteria

Learn what fetishistic disorder means, how it differs from a non-disordered fetish, which symptoms and signs matter clinically, and when safety concerns require urgent evaluation.

Fetishistic disorder is a mental health diagnosis used when a person has recurrent, intense sexual arousal focused on a nonliving object or a highly...

Fetal Alcohol Spectrum Disorder Risk Factors, Symptoms, and Recognition

Clear, evidence-informed overview of fetal alcohol spectrum disorder, including symptoms, physical signs, causes, risk factors, diagnostic context, complications, and when concerns need prompt evaluation.

Fetal alcohol spectrum disorder is a lifelong neurodevelopmental condition linked to alcohol exposure before birth. It can affect brain development, learning, behavior, emotional regulation,...

Factitious Disorder: Symptoms, Causes, Warning Signs, and Safety Concerns

A clear, condition-focused overview of factitious disorder, including how symptoms may appear, how clinicians distinguish it from similar conditions, and why complications can become serious.

Factitious disorder is a serious psychiatric condition in which a person intentionally presents themselves, or someone in their care, as ill, injured, or impaired...

Facial tic disorder Signs, Risk Factors, and Related Conditions

Learn what facial tics are, how they appear, why they happen, how tic disorders are classified, and when unusual symptoms need professional evaluation.

Facial tics are repeated, sudden movements involving the muscles of the face, eyes, mouth, nose, jaw, or head. They may look like excessive blinking,...

Expressive Language Disorder Explained: Symptoms, Causes, and Diagnostic Context

Clear, condition-focused overview of expressive language disorder, including how it differs from speech and receptive language problems, common signs by age, causes, risk factors, complications, and diagnostic context.

Expressive language disorder affects how a person uses words, sentences, and language to communicate thoughts, needs, questions, stories, or ideas. It is most often...

Exogenous depression: Causes, Warning Signs, and Related Conditions

Exogenous depression refers to depression linked to outside stressors. Learn what the term means today, how symptoms appear, what triggers it, and when urgent evaluation matters.

Exogenous depression is an older term for depression that appears to arise after an identifiable outside stressor, such as a loss, relationship breakdown, job...

Exhibitionistic Disorder in Mental Health: Symptoms and Risk Factors

A clear, clinically grounded overview of exhibitionistic disorder, including symptoms, diagnostic context, causes, risk factors, related conditions, complications, and safety concerns.

Exhibitionistic disorder is a psychiatric condition in which a person has a persistent pattern of sexual arousal involving exposing their genitals to an unsuspecting,...

Executive function disorder: Signs in Children, Teens, and Adults

Learn what executive function disorder means, how symptoms appear across ages, what conditions can cause executive dysfunction, and when evaluation may be important.

Executive function problems can make ordinary responsibilities feel unusually difficult, even when a person is motivated, intelligent, and trying hard. Someone may understand what...

Excoriation disorder Overview: Skin Picking Symptoms and Risk Factors

Understand excoriation disorder, also called skin-picking disorder, including common symptoms, visible signs, causes, risk factors, diagnostic context, and possible complications.

Excoriation disorder is a mental health condition in which a person repeatedly picks at their skin enough to cause sores, scabs, bleeding, scarring, or...

Excessive sleepiness disorder: Common Symptoms, Risk Factors, and Medical Mimics

Excessive sleepiness can signal hypersomnolence, sleep apnea, narcolepsy, depression, medication effects, or other medical causes. Learn the symptoms, warning signs, risks, complications, and diagnostic context.

Feeling sleepy now and then is normal. Feeling unable to stay awake during ordinary daytime activities, especially after what seems like enough sleep, is...

Excessive Daytime Sleepiness (Hypersomnolence Disorder): Overview of Symptoms and Related Conditions

Understand excessive daytime sleepiness and hypersomnolence disorder, including symptoms, causes, risk factors, diagnostic context, mental health effects, and safety concerns.

Excessive daytime sleepiness is more than feeling tired after a short night. It means a person has a strong tendency to fall asleep or...

Excessive daydreaming disorder overview and diagnostic context

Excessive daydreaming disorder, often called maladaptive daydreaming, involves vivid, compulsive fantasy that can disrupt work, school, sleep, and relationships. Learn the symptoms, causes, risks, diagnostic context, and warning signs that need prompt evaluation.

Excessive daydreaming disorder is most often discussed in clinical research as maladaptive daydreaming. It describes a pattern of vivid, absorbing, hard-to-control fantasy activity that...

Episodic mood disorder: How Mood Episodes Affect Thinking, Sleep, and Behavior

Clear overview of episodic mood disorder, including depressive, manic, hypomanic, and mixed episodes, possible causes, risk factors, diagnostic context, complications, and urgent warning signs.

Episodic mood disorder is a term used for mood conditions in which emotional symptoms occur in distinct episodes rather than as brief, ordinary mood...

Epileptic psychosis symptoms, seizure timing, causes, and complications

Epileptic psychosis can involve hallucinations, delusions, confusion, and behavior changes related to seizure timing, brain networks, and medical risk factors. Learn the major symptom patterns, causes, diagnostic context, and urgent warning signs.

Epileptic psychosis is a psychotic state that occurs in the context of epilepsy or seizure activity. It can involve hallucinations, delusions, confused thinking, paranoia,...

Endogenous depression: Overview, Risk Factors, and Complications

Endogenous depression is an older term for depression that appears internally driven or biologically rooted. Learn how it relates to major depression, melancholic symptoms, risk factors, diagnostic context, and serious warning signs.

Endogenous depression is an older term for a form of depression thought to arise mainly from internal biological vulnerability rather than from an obvious...

Encopresis Overview: Symptoms, Causes, and Concerns

Encopresis is repeated stool soiling in a child old enough for bowel control. Learn the key symptoms, causes, risk factors, related conditions, diagnostic context, and possible complications.

Encopresis is a childhood elimination disorder in which a child repeatedly passes stool in places other than the toilet after the age when bowel...

Emotional dysregulation and Mental Health: Symptoms and Diagnostic Context

A clear guide to emotional dysregulation, including what it means, how symptoms can appear across ages, common causes, linked conditions, risk factors, complications, and diagnostic context.

Emotional dysregulation is difficulty managing the intensity, duration, expression, or behavioral impact of emotions. It can make ordinary stress feel overwhelming, make reactions seem...