Extreme cold or hot temperatures, or sudden changes in temperature, are poorly tolerated by persons with AD. High humidity causes increased sweating and may result in prickly heat-type symptoms. Low humidity dries the skin, especially during winter months when homes are heated. Unfortunately, humidifiers do not help much; the best protection against “winter itch” is regular application of a good moisturizer. While you can do little about the climate (and moving to a new climate is usually not recommended), you can try to keep your home environment comfortable. Keeping thermostats set low and wearing fewer bedclothes, to prevent night sweating, are two ways to combat the problem.