Ask the Doctor

Feeling unusually cold on a regular basis can have several explanations, from everyday factors to conditions worth checking.

A bright red patch on the white of your eye can be scary, even when it doesn’t hurt. Find out what might have caused it and when to call a doctor.

A high calcium result often turns up on a routine lab test. Possible causes range from overactive parathyroid glands to excess vitamin D.

Back and pelvic pain in people with Crohn’s can signal sacroiliitis or other joint inflammation. Learn how doctors sort this out from routine back strain.

From rich meats and seafood to coffee and dairy, what you eat can shift uric acid levels. See which choices may influence painful gout flares.

Not all cases of gallstones need treatment. Many people have gallstones that never cause pain or other symptoms and can be left alone. But if gallstones cause persistent pain or other symptoms, doctors often opt to surgically remove the gallbladder.

MRI contrast dye is widely used and considered safe. It helps highlight blood vessels, tumors, and other structures to improve diagnostic accuracy. Rarely, contrast dye can trigger a serious condition called nephrogenic systemic fibrosis in people with advanced kidney disease.

Lung scarring from pulmonary fibrosis can cause breathlessness and cough. Learn about symptom relief and newer treatment options.

A new, tender lump in a man’s breast doesn't necessarily mean cancer. But it should not be ignored. Gynecomastia is one possible cause, but there are others.

Claims that nightshade vegetables worsen rheumatoid arthritis are widespread. See what research says and which eating patterns show more promise.