TABLE 3

Differential Diagnosis of EDs

Endocrine disorders
 Hyperthyroidism or hypothyroidism
 Diabetes mellitus
 Hypercortisolism
 Adrenal insufficiency
Gastrointestinal disorders
 Inflammatory bowel disease
 Celiac disease
 Infectious diarrhea
 Immunodeficiency or chronic infections (ie, HIV, tuberculosis)
Psychiatric disorders
 Depression
 Obsessive compulsive disorder/anxiety
 Substance abuse
Other disorders
 Superior mesenteric artery syndrome
 Malignancies
 Central nervous system tumors (ie, prolactinoma)
 Pregnancy
 Excessive exercise/energy imbalance
 Rheumatologic disease
 Wilson’s disease
 Porphyria