William H. Blahd Jr. MD FACEP


Chilblains (Perniosis)

Chilblains (perniosis, also known as pernio) is a reaction to cold, nonfreezing temperatures. It is seen most often in young people who have Raynaud’s phenomenon and people who are exposed to damp, cold weather. Symptoms develop 2 to 14 hours after exposure to cold and usually affect the hands, ears, lower legs, or…

Abdominal Pain, Age 11 and Younger

Covers possible causes of abdominal pain in children 11 and younger, including stomach flu, urinary tract infection, constipation, and appendicitis. Includes interactive tool to help you decide when to call a doctor. Offers home treatment tips.

Arm Problems, Noninjury

Covers problems like swelling or arm pain caused by overuse, arthritis, and hormone changes. Links to info on bursitis and osteoarthritis. Includes tool to help you decide when to call a doctor. Offers home treatment and prevention tips.

Nerves of the Arm

Three main nerves run past the elbow and wrist to the hand. Median nerve. This nerve passes down the inside of the arm and crosses the front of the elbow. At the wrist it goes through a “tunnel”-called the carpal tunnel-made up of the wrist bones and a tough band of connective tissue (ligament). The median nerve…

Ear Problems and Injuries, Age 11 and Younger

Ear pain in children may be a sign of an infection in the space behind the eardrum ( middle ear). Ear infections ( otitis media ) most commonly occur when cold symptoms, such as a runny or stuffy nose and a cough, have been present for a few days. An ear infection may occur when the eustachian tube swells and closes and…