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The 41 pages that link to Functional impairment, each with the reason it gives.

• DepressionRelated: Depressive symptoms can disrupt work, study, relationships, and self-care.

• Specific phobiaRelated: Clinically significant interference helps distinguish a disorder from a harmless dislike.

• Bipolar disorderRelated: The effects on work, relationships, and daily life help establish episode severity.

• Anxiety disorderRelated: Distress or disruption to work, relationships, or routine helps separate disorder from ordinary worry.

• Attention deficit hyperactivity disorderRelated: ADHD diagnosis requires symptoms to interfere with functioning, not merely to be present.

• AgoraphobiaRelated: Assessing disrupted travel, work, and social activity helps describe agoraphobia's practical burden.

• Avoidance behaviorRelated: Persistent avoidance can restrict work, relationships, healthcare, and everyday tasks.

• Body dysmorphic disorderRelated: Impairment helps distinguish a disorder from nonclinical dissatisfaction with appearance.

• Personality disorderRelated: Problems in relationships, work, or other roles can show the pattern's practical impact.

• Mental disorderRelated: Impairment helps distinguish clinically significant disturbance from ordinary variation.

• Somatic symptom disorderRelated: Impairment in daily life is a key treatment target beyond symptom intensity alone.

• Avoidant personality disorderRelated: Diagnosis depends on enduring patterns that significantly affect functioning or cause distress.

• Paraphilic disorderRelated: Impairment can make an atypical interest clinically diagnosable even without harm to others.

• ParanoiaRelated: Its effects on relationships and daily life help determine the seriousness of paranoia.

• VoyeurismRelated: Impairment can make a persistent sexual interest clinically significant.

• ClaustrophobiaRelated: Avoiding lifts, travel, or medical procedures can show the phobia's practical impact.

• Dissociative disorderRelated: Diagnosis depends on clinically significant distress or impairment, not dissociation alone.

• Major depressive episodeRelated: Work, relationships, and self-care may be impaired during an episode.

• Bipolar I disorderRelated: Marked impairment helps distinguish mania from elevated mood without a disorder.

• Cyclothymic disorderRelated: Subthreshold symptoms can still disrupt relationships, work, and everyday responsibilities.

• Bipolar II disorderRelated: Depressive and hypomanic symptoms can disrupt work, relationships, and daily routines.

• HypomaniaRelated: The absence of marked impairment helps distinguish hypomania from mania.

• AcrophobiaRelated: The clinical significance of acrophobia depends partly on disruption to a person's life.

• Orthorexia nervosaRelated: Disruption of social life, work, or daily routines helps distinguish concern from impairment.

• Schizoid personality disorderRelated: Treatment decisions are guided by distress and impairment, not detachment alone.

• Brief psychotic disorderRelated: The episode can disrupt functioning even when symptoms later resolve completely.

• Dependent personality disorderRelated: Diagnosis requires more than dependent traits; the pattern must cause significant distress or impairment.

• Internet addiction disorderRelated: Impairment distinguishes clinically concerning use from high use without substantial harm.

• KleptomaniaRelated: Distress, legal consequences, and disrupted relationships can make symptoms clinically significant.

• Myalgic encephalomyelitis/chronic fatigue syndromeRelated: Substantial reduction in activity is central to clinical descriptions of ME/CFS.

• OphidiophobiaRelated: Disruption to travel, outdoor activities, or routine tasks helps distinguish a disorder from mild fear.

• Oppositional defiant disorderRelated: Diagnosis considers whether symptoms disrupt relationships, education, or other areas of life.

• DysthymiaRelated: Persistent symptoms can affect work, relationships, and daily responsibilities even when they seem mild.

• Histrionic personality disorderRelated: Diagnosis concerns persistent patterns that impair relationships, work, or other functioning.

• Electromagnetic hypersensitivityRelated: The practical burden may be substantial even when a specific electromagnetic cause is unverified.

• HyperactivityRelated: Persistent activity becomes clinically relevant when it interferes with functioning across important settings.

• HypersexualityRelated: Impairment helps distinguish a disorder from frequent sexual thoughts or behavior without harmful consequences.

• Maladaptive daydreamingRelated: Interference with daily functioning is one reason the pattern is described as maladaptive.

• MysophobiaRelated: Distress and disruption to daily life help distinguish a disorder-level problem from strong but manageable caution.

• ScopophobiaRelated: The extent to which fear disrupts work, education, or relationships helps determine clinical significance.

• Transplant donor siteRelated: Removing tissue can weaken or restrict the donor region, depending on its role.