Symptom: Dry, itchy skin. Photo by Fuse/Getty Images. What it might mean: It's probably winter itch, skin dryness that's a result of cold, dry air. Using a humidifier, avoiding super hot showers, and routinely slathering on a thick moisturizer will help keep skin supple.
But Death Valley is affected by several of the main causes of heat waves - the frequent presence of a high pressure system (helped by its below sea level elevation), downslope air movement from surrounding mountains, and radiation of heat from the surrounding cliffs.
Heat rash is caused when sweat gets blocked in your pores. This is a common rash in babies, but can occur at any age. This skin condition tends to form where skin rubs against skin, such as in skin folds of the neck, breasts, groin, and underarms.