| Back and Neck Pain Pain in the back or neck area can be acute, which comes on suddenly and intensely, or chronic, which can last for weeks, months, or even years. The pain can be continuous or intermittent. |
| Bacterial Skin Infections Detailed information on the most common bacterial skin infections, including cellulitis, folliculitis, boils, carbuncles, and staphylococcal scalded skin syndrome |
| Balance Disorders Detailed information on balance disorders, including acoustic neurinoma and Ménière's disease
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| Baldness (Alopecia) Baldness is usually most noticeable on the scalp, but can occur anywhere on the body where hair grows. The condition is more common in men than in women. |
| Barium X-Rays (Upper and Lower GI) Detailed information on barium x-rays, also called upper and lower GI series, including information on how the procedure is performed |
| Barrett's Esophagus Detailed information on Barrett's esophagus, including cause, symptoms, diagnosis, and treatment |
| Basal Cell Carcinoma Detailed information on basal cell carcinoma, including risk factors and how the disease develops |
| Basal Cell Nevus Syndrome (Gorlin Syndrome) The risk for ovarian cancer and skin cancer is increased with basal cell nevus syndrome, a rare genetic disorder. |
| Basic Anatomy of the Heart Located almost in the center of the chest, the adult human heart is about the size of two fists held side-by-side. |
| Bed Sores Detailed information on bed sores, including causes, prevention, and treatment |