Abnormal Conditions of Hair Growth

Pseudofolliculitis Barbae

Pseudofolliculitis barbae (PFB) is a medical term for ingrowing hairs, often caused by the sebaceous gland not producing enough oil, or shaving with a razor, or certain other factors. It is also referred to by various colloquial terms such as “razor bumps” or “shaving bumps”.

PFB is most common on the male face, but it can also occur on other parts of the body where hair is shaved or plucked, especially areas where hair is curly and the skin is sensitive, such as regions of genital shaving.
There is also a related condition known medically as folliculitis barbae. The difference between them is the origin of the inflammation in the hair follicles. Folliculitis barbae is caused by viral or bacterial infections, whereas pseudofolliculitis barbae is caused by irritation from shaving and ingrowing hairs.


Hirsutism in women is relates to excessive growth of thick dark hair in locations where hair in women is typically either minimal or totally absent. The condition is caused by the presence of excessive amounts of testosterone (a male hormone) in the body. All me, and women have some level of testosterone in their bodies, but if a greater number of male hormones than female hormones is present, certain symptoms of secondary male sex characteristics, including the growth of body hair, can develop.

One cause of abnormal hair growth in the abdominal region can be due to pregnancy. The level of hormones in the body during pregnancy rise, and this might cause a variety of temporary side effects such as acne, skin tone changes and the growth of unwanted body hair.

Because hair growth varies from woman to woman and also across ethnic groups, it is frequently difficult to ascertain whether a patient is clinically hirsute. Both men and women with dark hair and high levels of skin pigmentation tend to be more prone to hirsutism than men and women with blond hair or fair skin. In the majority of cases, the condition of hirsutism is benign and primarily of cosmetic concern.

Congenital Hypertrichosis

Congenital generalized hypertrichosis (in the worst cases sometimes known colloquially as werewolf syndrome) is a medical term referring to the condition of excessive body hair which is present from birth. It can be either generalized, symmetrically affecting most of the torso and limbs, or localized, affecting one or more specific areas of skin. It can be mild or severe. In most cases, the term is used to refer to an above-average amount of unwanted but normal body hair, and is considered to be an aspect of normal variations within humans.
Congenital generalized hypertrichosis causes excessive facial and upper body hair in men, and less severe asymmetrical hair distribution in women.

In medical practice, once generalized hypertrichosis has been distinguished from hirsutism, it is most often considered to be a variation of the normal and due primarily to genetic factors.

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