USC Health Now

Q: My scalp tends to get itchy when the seasons change, particularly in the fall and winter. What causes this and what can I do about it?

A. Scalp itching can be influenced by a variety of environmental factors such as humidity levels, seasonal variation in clothing and seasonal variation in allergens and allergies, says David Peng, M.D., M.P.H., assistant professor of clinical dermatology at the Keck School of Medicine. “During the fall and winter seasons, many individuals notice that their scalp will become more itchy,” says Peng. “Studies have shown that the individuals who do notice a change in pruritus (dry skin) based on season tend to have milder cases of scalp itching.” He points out that those with more severe disease tend to have these symptoms year round. Many of the over-the-counter anti-itch preparations may be of benefit for seasonal itch, says Peng, as well as mild antihistamines such as diphenhydramine in a 10 milligram measurement. Other products worth trying, he says, are shampoos that contain selenium or tar products. If over the counter medications do not help to resolve the itching, Peng says prescription strength solutions that contain topical steroids are almost always effective. He also recommends that people with itchy scalps avoid occlusive headwear such as tight fitting hats or “beanies.”