A desert is a region of land that is very dry because it receives low amounts of precipitation (usually in the form of rain but may be snow, mist or fog), often has little coverage by plants, and in which streams dry up unless they are supplied by water from outside the area.
Alopecia areata is an autoimmune disease. Autoimmune means that the body's immune system attacks the body. When alopecia areata develops, the body attacks its own hair follicles. A person's genetic makeup, combined with other factors, triggers this form of hair loss.
What is Alopecia Totalis. AT is one of a group of three main conditions. Those three are Alopecia Areata, Alopecia Universalis, and of course Alopecia Totalis. AT is an auto-immune disorder which results in the total loss of hair, but only on the scalp. It is somewhat of an intermediary condition between Alopecia Areata which is patchy scalp hair loss. Alopecia Universalis extends to total body hair loss.