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Frequency. 1 in 1,000,000. Stiff-person syndrome (SPS), also known as stiff-man syndrome, [1] is a rare neurological disorder of unclear cause characterized by progressive muscular rigidity and stiffness. The stiffness primarily affects the truncal muscles and is characterised by spasms, resulting in postural deformities.
Contents. Antisocial personality disorder. Antisocial personality disorder (ASPD or APD) is a personality disorder characterized by a limited capacity for empathy and a long-term pattern of disregard for or violation of the rights of others, starting before one was 15 years old. [ 3 ][ 4 ] Other notable symptoms include impulsivity, reckless ...
Personality disorders (PD) are a class of mental disorders characterized by enduring maladaptive patterns of behavior, cognition, and inner experience, exhibited across many contexts and deviating from those accepted by the individual's culture. [ 1 ] These patterns develop early, are inflexible, and are associated with significant distress or ...
e. Borderline personality disorder (BPD), also known as emotionally unstable personality disorder (EUPD), [16] is a personality disorder characterized by a pervasive, long-term pattern of significant interpersonal relationship instability, a distorted sense of self, and intense emotional responses. [9][17][18] People diagnosed with BPD ...
Dissociative identity disorder [1] [2]; Other names: Multiple personality disorder Split personality disorder: Specialty: Psychiatry, clinical psychology: Symptoms: At least two distinct and relatively enduring personality states, [3] recurrent episodes of dissociative amnesia, [3] inexplicable intrusions into consciousness (e.g., voices, intrusive thoughts, impulses, trauma-related beliefs ...
Post-traumatic stress disorder (PTSD) [b] is a mental and behavioral disorder [8] that develops from experiencing a traumatic event, such as sexual assault, warfare, traffic collisions, child abuse, domestic violence, or other threats on a person's life or well-being.
Hypomania (literally "under mania " or "less than mania") [3] is a mental and behavioral disorder, [4] characterised essentially by an apparently non-contextual elevation of mood (euphoria) that contributes to persistently disinhibited behavior. The individual with the condition may experience irritability, not necessarily less severe than full ...
1–2% (general population) [ 2 ] Depersonalization-derealization disorder (DPDR, DDD) [ 3 ][ 4 ] is a mental disorder in which the person has persistent or recurrent feelings of depersonalization and/or derealization. Depersonalization is described as feeling disconnected or detached from one's self. Individuals may report feeling as if they ...