Cryptococcal meningitis (cranial MRI)

Acute autonomic neuropathies

Acute autonomic neuropathy is an inclusive term used to describe diseases resulting from distinct etiologies but that have in common pathology of the peripheral autonomic nervous system. All acute autonomic neuropathies share common clinical features that may include orthostatic hypotension, dry eyes and mouth, cold feet and hands with color or trophic changes in the skin, reduced or accentuated sweating, anorexia or early satiety referable to gastroparesis, erectile or ejaculatory failure, and defects in micturition stream or volume, but selective syndromes are known.

Lead neuropathy

Arsenic neuropathy

Although arsenic is more commonly known for intentional poisonings in homicides or suicides, the most common etiology of arsenic toxicity worldwide is ingestion of contaminated drinking water in endemic areas. The neuropathy related to arsenic is rarely seen without other systemic manifestations, including abdominal pain and skin changes. Arsenic neuropathy causes painful paresthesias and, with higher level or continued exposure, length-dependent weakness.