Hair Loss Causes and Prevention
Improper Hair Cosmetic Use/Improper Hair Care - Many men and women use chemical treatments on their hair, including dyes, tints, bleaches, straighteners, and permanent waves. These treatments rarely damage hair if they are done correctly. However, the hair can become weak and break if any of these chemicals are used too often. Hair can also break if the solution is left on too long, if two procedures are done on the same day, or if bleach is applied to previously bleached hair. If hair becomes brittle from chemical treatments, it's best to stop until the hair has grown out.
Hairstyles that pull on the hair, like ponytails and braids, should not be pulled tightly and should be alternated with looser hairstyles. The constant pull causes some hair loss, especially along the sides of the scalp.
Shampooing, combing and brushing too often, can also damage hair, causing it to break. Using a cream rinse or conditioner after shampooing will make it more manageable and easier to comb. When hair is wet, it is more fragile, so vigorous rubbing with a towel, and rough combing and brushing should be avoided. Don't follow the old rule of 100 brush strokes a day-that damages hair. Instead, use wide toothed combs and brushes with smooth tips.
Disease And Other Factors
Traction alopecia is most commonly found in people with ponytails or cornrows who pull on their hair with excessive force. Wearing a hat shouldn't generally cause this, though it is a good idea to let your scalp breathe for 7 hours a day.
Traumas such as chemotherapy, childbirth, major surgery, poisoning, and severe stress may cause a hair loss condition known as telogen effluvium.
Some mycotic infections can cause massive hair loss.
Alopecia areata is an autoimmune disorder also known as "spot baldness" that can result in hair loss ranging from just one location (Alopecia areata monolocularis) to every hair on the entire body (Alopecia areata universalis).
Localised or diffuse hair loss may also occur in cicatricial alopecia (lupus erythematosus, lichen plano pilaris, folliculitis decalvans, central centrifugal cicatricial alopecia, postmenopausal frontal fibrosing alopecia, etc.). Tumours and skin outgrowths also induce localised baldness or hair loss (sebaceous nevus, basal cell carcinoma, squamous cell carcinoma).
Hypothyroidism can cause hair loss, especially thinning of the outer third of the eyebrows.
Temporary loss of hair can occur in areas where sebaceous cysts are present for considerable duration; normally one to several weeks in length.