AP BIOLOGY

Detailed explanation-1: -Symptoms begin in early adulthood; they include chronic watery diarrhea, autonomic failure (eg, urinary retention, urinary incontinence, orthostatic hypotension), and a primarily sensory peripheral polyneuropathy . Cognitive decline and seizures occur when patients are in their 40s or 50s.

Detailed explanation-2: -Symptoms of prion diseases include: Rapidly developing dementia. Difficulty walking and changes in gait. Hallucinations.

Detailed explanation-3: -They might include: Dizziness and fainting when standing, caused by a sudden drop in blood pressure. Urinary problems, such as difficulty starting urination, loss of bladder control, difficulty sensing a full bladder and inability to completely empty the bladder.

Detailed explanation-4: -Autonomic neuropathy can also cause erectile dysfunction (ED) when it affects the nerves that control erection with sexual arousal. However, sexual desire does not usually decrease. Diarrhea can occur when the nerves that control the small intestine are damaged. The diarrhea occurs most often at night.