The human body contains many natural polymers, such as proteins and nucleic acids. Cellulose, another natural polymer, is the main structural component of plants. Most natural polymers are condensation polymers, and in their formation from monomers water is a by-product.
Alopecia areata is one type of hair loss that typically causes patches of baldness. In some cases, total baldness develops. In many cases, the hair re-grows, typically after several months. In some cases, the hair loss is permanent.
We generally, associate hair loss with stress and depression. Some hair loss symptoms may not be as simple as they seem. Alopecia Areata is one such condition which leads to partial or complete baldness. Alopecia Barbae is a type of alopecia areata which causes hairless patches in beard. Sometimes a burning sensation also felt in the affected areas. Studies indicate that the factors responsible for causing this condition may be heredity and autoimmune diseases; however, no evident reasons are identified yet.