In-depth

Acanthosis nigricans

Addison's disease

Alcoholic hepatitis

Alcoholic liver disease

Amyloidosis

Angina

Anorexia nervosa

Ascariasis

Aspergillosis

Bile reflux

Binge-eating disorder

Blind loop syndrome

Bone cancer

C. difficile infection

Cancer

Carcinoid tumors

Castleman disease

Celiac disease

Chronic lymphocytic leukemia

Chronic myelogenous leukemia

Churg-strauss syndrome

Cirrhosis

Colon cancer

Congenital adrenal hyperplasia

Congenital adrenal hyperplasia is a genetic condition affecting the adrenal glands and interfering with normal growth and development in boys and girls.

Crohn's disease

Cryptosporidium infection

Cyclospora infection

Depression

Dermatomyositis

Diabetes

Diabetes affects how your body uses blood sugar. Too much blood sugar over long periods can cause serious health problems, but treatments are available.

Diabetes insipidus

Diabetic neuropathy

Drug addiction

Dysphagia

Ebola virus and Marburg virus

Esophageal cancer

Reduce your risk of esophageal cancer by eating more fruits and vegetables.

Fibromuscular dysplasia

Gallbladder cancer

Gastroparesis

Giant cell arteritis

Giardiasis

Granulomatosis with polyangiitis

Graves' disease

H. pylori infection

Hairy cell leukemia

Histoplasmosis

HIV/AIDS

Hodgkin's lymphoma

Hyperthyroidism

Hypopituitarism

Intestinal ischemia

Kidney cancer

Lead poisoning

Leukemia

Liver cancer

Lung cancer

Mesothelioma

Multiple myeloma

Neuroblastoma

Non-Hodgkin's lymphoma

Norovirus infection

Noroviruses cause an intestinal flu-like illness that typically resolves within days. Norovirus infection is highly contagious, especially in closed settings like hospitals and cruise ships.

Pancreatic cancer

Pancreatitis

Peptic ulcer

Pheochromocytoma

Pituitary tumors

Polymyalgia rheumatica

Prescription drug abuse

Primary sclerosing cholangitis

Pulmonary fibrosis

Pyloric stenosis

Recurrent breast cancer

Rheumatoid arthritis

Seasonal affective disorder (SAD)

Sheehan's syndrome

Stomach cancer

Takayasu's arteritis

Tapeworm infection

Teen depression

Throat cancer

Thyroid nodules

Most thyroid nodules — lumps in the thyroid gland — cause no problems. But nodules that affect swallowing, produce excess thyroid hormone or are malignant require treatment.

Toxic hepatitis

Tuberculosis

Type 1 diabetes

Type 1 diabetes in children

Type 1 diabetes is a lifelong — sometimes frightening — condition, but it doesn't need to slow your child down. Learn more about managing type 1 diabetes.

Type 2 diabetes

Type 2 diabetes in children

Typhoid fever

Ulcerative colitis

Valley fever

Vasculitis

Vitamin deficiency anemia

Whipple's disease

Zollinger-Ellison syndrome

Aug. 26, 2014