A. Many under-breast rashes are caused by yeast infections that respond well to an antifungal drug such as miconazole. These ...

Adolescents and adults who develop a penicillin-associated rash during an Epstein-Barr virus infection may go on to have persistent drug hypersensitivity.

If they stop taking the medication too soon, they may develop a rebound rash. A treatment course of about 2 to 3 weeks should help effectively treat a poison ivy rash.

DEAR DR. ROACH: I am 78 years old. Breast cancer runs in my family, and I am one of the lucky ones who had a lump that was ...

Persistence despite treatment indicates the need for professional diagnosis. If a rash hasn’t improved after a week of appropriate home care, consult a healthcare provider.

Side effects often manifest as drug rashes, lymphocytopenia, gastrointestinal symptoms, and fatigue. Depending on severity, dose adjustments or prolonged, lower-dose therapy may be needed.