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.
Many people are aware of the most common causes of hair loss, which include genetics, hormones, menopause, medical conditions, and stress. However, there are a wide variety of factors that can cause balding and hair thinning, some of which are often overlooked. Fungal infections of the scalp can cause balding. Treating hair loss from these fungal infections requires a different approach than with other types of hair loss. Ringworm of the scalp is a fungal infection that affects the scalp and hair fibers, causing hair loss and other irritating issues. With ringworm, small patches of itchy and scaly skin appear on the scalp, leading to excessive dandruff, flaking of the skin, and inflammation.