A patient's record indicates a skin condition in which depigmentation appears on different parts of the body that are often exposed to sunlight. A skin biopsy reveals a lack of melanocytes. Which condition does this describe?

A. Diverticulitis:

Diverticulitis involves inflamed diverticula in the colon, causing LLQ abdominal pain, not rectal vein issues.

B. Hemorrhoids:

Hemorrhoids are dilated veins in the rectal or anal mucosa, causing rectal bleeding and discomfort.

C. Anal fissure:

An anal fissure is a tear in the anal mucosa, causing sharp pain and sometimes bleeding, but not dilated veins.

D. Rectal prolapse:

Rectal prolapse is protrusion of the rectum through the anus, not just dilated veins.

A. Cerebral aneurysm:

A cerebral aneurysm involves a bulging blood vessel in the brain, which could lead to rupture and bleeding. It is not associated with tremors or bradykinesia.

B. Multiple sclerosis:

MS involves demyelination causing muscle weakness and visual disturbances, but not primarily tremors and bradykinesia.

C. Amyotrophic lateral sclerosis (ALS):

ALS affects motor neurons, leading to muscle weakness and atrophy, but does not typically present with tremors or benefit from deep brain stimulation.

D. Parkinson disease:

Parkinson disease features tremors, bradykinesia (slow movements), and abnormal gait. Deep brain stimulation is an advanced therapy for symptom management in Parkinson’s.