Alzheimer's disease develops slowly and gradually worsens over years. Disease affects memory, thinking, judgment, language and movement. Average life expectancy after diagnosis is 3-11 years
Delusions are fixed, false beliefs that don't change despite evidence. DSM-5 categorizes delusions as bizarre, non-bizarre, mood-congruent, or mood-incongruent. Common themes include persecution, control, grandiosity, and religious beliefs
ADHD affects 1 in 10 children and can occur in both children and adults. Disorder runs in families and is linked to multiple genes. Possible causes include food additives, low omega-3 intake, and environmental toxins
Delusion is a false fixed belief that cannot be changed despite evidence. Bizarre delusions are implausible and not understandable by peers. Non-bizarre delusions reflect real-life situations like being followed. Mood-congruent delusions relate to depression or mania. Mood-neutral delusions don't relate to emotional state
Retrograde amnesia is inability to access memories before injury or disease. Pure RA can be focal, isolated, or pure without anterograde amnesia. Temporally graded RA follows Ribot's law, losing recent memories more
Korsakoff syndrome is a neurological disorder caused by thiamine deficiency. Typically associated with excessive alcohol consumption. Named after Sergei Korsakoff, who described it in late 19th century