Five months ago, a teenager suffered an injured cuticle while trimming his toenail. The lesion oozes and bleeds after the patient wears shoes, and the surrounding area is very tender and warm. What diagnosis and treatment should I consider?

What is the differential diagnosis for a formerly active and healthy 70-year-old woman with worsening proximal weakness, torticollis, and a widespread raised red rash across her cheeks bilaterally?

What is the best location to sample when obtaining a punch biopsy from a potential dysplastic nevus or malignant melanoma?

Is there a way to reduce or eliminate frequent episodes of boils?

With requests from patients for more and more radiologic studies, are there any data documenting the side effects of radiation due to continued and increased exposure to CT scans, x-rays, etc.?

Can we prescribe the ARBs and the ACE inhibitors in insurance company formularies for the treatment of diabetic nephropathy, or must we push for specific agents?

How should vitamin B12 be administered? I have read that injections are not necessary for administering vitamin B12—even in gastrectomy patients.

Why are Histussin HC and Histinex HC no longer available?

Since most tissues shrink with age, why does the prostate expand as men grow old?

To reduce the risk of antibiotic-associated diarrhea, I recommend yogurt with live cultures. The yogurt also helps settle diarrhea after a bout of gastroenteritis....