Acute Intermittent Porphyria (AIP) is a rare genetic disorder that affects the production of heme, causing periodic attacks of severe abdominal pain.

Crohn's disease is a chronic inflammatory bowel disease causing inflammation and damage to the digestive tract.

Chronic fatigue syndrome: a condition characterized by persistent and debilitating fatigue, possibly linked to autoimmune factors.

Complex Regional Pain Syndrome (CRPS) is a chronic pain condition that typically affects an arm or leg, characterized by intense pain and changes in skin color and temperature.

Complex Regional Pain Syndrome (CRPS) is a chronic condition causing severe pain, usually in an extremity, with various symptoms.