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.
Hair loss is usually caused by problems with the natural hair cycle, but it may also be linked to your scalp health. One trigger is scalp ringworm, a fungal infection usually passed on by towels, brushes or sheets, which can cause scaly, bald patches. Your GP will treat it with oral medication and a medicated shampoo.