There are a number of different types of alopecia from alopecia universalis, which is a total loss of all body hair, to alopecia areata, which is a much more common condition. It affects 1-2 % of the population at some point of our lives. The hair loss can be sudden and manifests itself in small, smooth-skinned patches that may widen with time. Traction alopecia can occur when hair is lost by constant tension or rubbing of hair ie. ponytail too tight or extensions that are too heavy for fine sections of hair.