Doctors do not know why the immune system attacks hair follicles, but they believe that both your genes and environmental factors play a role. Hair follicles are the structures in skin that form hair. Learn more about other possible causes of thinning hair.
Toxic Alopecia May Happen After A High Fever Or Severe Illness.
Alopecia totalis happens when your immune system starts destroying your hair follicles. These sunburns increase the risk of developing skin cancer on your scalp. Localized alopecia areata causes round patches of hair loss on the scalp, but alopecia totalis causes complete baldness of the scalp.
There Is A Genetic Link As Well As A Link With Autoimmune Conditions And Allergies.
In alopecia areata, the immune system mistakenly attacks hair follicles, causing hair loss. Because au causes baldness, there’s a higher risk for scalp burn from sun exposure. The most common presentation involves bald patches on the scalp or beard.
Typically, Hair Regrows Within A Year Without Treatment.
If hair loss is complete on the scalp, it is called alopecia totalis, and if all body hair is lost, it is called alopecia universalis. The exact cause of this type of hair loss is unknown. Among people with alopecia areata, there is a higher occurrence of thyroid disease, atopic eczema, nasal allergies, and asthma.
This Is The Total, Or Just About Total Loss Of Hair On The Scalp.
Scarring alopecia affects both men and women, and it can cause irreversible damage of the hair follicles, replacing them with scar. To develop alopecia, an individual must have both a family history, and some type of environmental trigger. Alopecia areata (aa) is probably the third most common form of hair loss dermatologists see, after androgenetic alopecia and telogen effluvium.
