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One of the most common hair disorders is androgenetic alopecia. It causes hair loss in men, women and children. There is a definite and regular pattern for hair loss and it usually starts with the hairline and proceeds to the crown. This pattern is more observed in men and is known as male pattern baldness. During this condition, terminal hairs are converted to indeterminate hairs and then to vellus hairs. This disorder affects 50% of men and about 13% of women. This disorder does not have any serious consequences, with the only possible effect being that with the scalp exposed to ultraviolet light, there is a chance of sustaining actinic damage. In a few cases, the occurrence of androgenetic alopecia has been linked to myocardial infarction and benign prostatic hypertrophy, but no conclusive evidence has been found.

Hair starts receding at the hairline and gradually recedes and forms an M shape. The hair becomes shorter and thinner and hair loss starts at the crown area and the hair is lost in patches. Usually the pattern of hair loss is observed to determine the condition and a few procedures such as skin biopsy may be performed to know the exact disorders causing hair loss. There are three reasons behind the occurrence of androgenetic alopecia. The first and the most common reason is genetics. People having a family history of androgenetic alopecia are much more likely to suffer from it than others. Most of the research and studies in this field have also proved that male pattern baldness, to a large extent is X-linked which means that the male gene, androgen is responsible for the occurrence of premature baldness in people.

Hormone levels can also cause androgenetic alopecia. Men with lower levels of testosterone are more prone to this condition. Men with high levels of free testosterone and high levels of free androgens also are at a risk for this condition. A high level of 5-alpha-reductase which is an enzyme that converts testosterone into DHT which in turn causes hair to become shorter and thinner is responsible for this condition. Aging is also one of the reasons for hair loss because as we age, the ratio of the number of hairs in growth stage to the number of hairs in resting stage keeps changing leading to hair loss.

For people who are not affected by their appearance, no treatment is required. Others can use hair wigs, pieces and opt for waving to get back lost hair. Hair transplants can also be done and the results from it are usually good. A lot of drugs are also available in the market for treatment of androgenetic alopecia and one of them is Propecia. It is an FDA approved drug to cure hair loss and is recommended for only men. It basically prevents the production of male hormone dihydrotestosterone. It can be purchased online with an approved prescription of a doctor and is readily available even in the market.