Physicians are no strangers to the pen and have made invaluable contributions to world literature. Here, the story of a 21st-century internist-author who is firmly rooted in both worlds.

A 27-year-old woman intermittently experiences painful oral lesions such as this one on her upper lip. Your impression?

Headaches have been awakening a man in his mid-40s at about 3 in the morning for a period of 2 weeks. On this, his second visit to the ED for the symptom, he claims numbness in one arm and reports vomiting earlier that evening. More details of the case, here.

A 34-year-old woman presents for follow-up of her type 2 diabetes mellitus and starts therapy with lisinopril. She thinks she also may be pregnant. What is the problem?

Men with high testosterone levels may have weakened immune systems, which may be why their immune systems respond less strongly to vaccinations.

A beautiful baby with a yellow plaque. . . . idiopathic chilblains . . . 5 questions here to challenge you.

Men who played a varsity sport in high school tend to be healthier than those who did not, according to a new study.

(AUDIO) The past year has been revolutionary for HIV-positive patients, both in medical care and in policy. And more is in store for the coming year, according to Dr. Michael Horberg of Kaiser Permanente. Listen as the immediate past president of the HIV Medicine Association briefly reviews events of 2013 and forecasts 2014.

About one-third of HIV-infection individuals show abnormal kidney function, particularly African-Americans. The watchword of prevention and treatment is screening and early, effective use of antiretroviral therapy.

Regular exercise; no smoking; and maintaining a low body weight, a healthy diet, and low alcohol intake may reduce the risk significantly.

Antimicrobials delivered in the products already used during sexual activity show great promise for protecting particularly vulnerable individuals against transmission of HIV.

Men who are overweight or obese have lower sperm counts and lower ejaculate volumes, a recent study showed.

Heart disease, stroke, and cancer are leading causes of death in men, but they present to primary care with a variety of other, often difficult-to-diagnose concerns. Take this week’s photo quiz to test your knowledge of men’s health issues.

A 20-year-old woman presents in mid-winter with a mildly painful, swollen, and discolored left toe of a week’s duration. What cause do you suspect?

A homeless man with lithophagia; hereditary trichoepithelioma; IBD mimics: can you answer this week's quiz questions about these and 2 other disorders?

This lesion in a previously healthy 40-year-old man, which was initially a small pustule, has enlarged into an open wound. What does this look like to you?

A 16-year-old boy had an asymptomatic, hyperpigmented, hairy lesion on his left upper back. What's your diagnosis?

I started kissing patients in med school. And I haven’t stopped.