Hypertrichosis

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Hypertrichosis

 

the excessive growth of hair on a person’s body where only downy hairs usually grow.

There are several kinds of hypertrichosis. Heterogeneous hypertrichosis occurs in girls and women; it is the appearance of a beard, moustache, or male-type hair growth. (In men, pubic hair grows in a diamond shape; in women, in the form of a triangle with the upper boundary the horizontal side.) Hair growth increases during the period of sexual development and before or during the climacteric. Heterochronous hypertrichosis is the premature appearance of hair as a secondary sex characteristic (the appearance of a beard, moustache, or pubic hair in children). It is caused by a developmental anomaly or a disease of the endocrine glands. Heterotypic hypertrichosis is an increased amount of hair in unusual places, such as the small of the back. Hypertrichosis can be partial, local, or distributed over the whole body. Limited hypertrichosis can be either hereditary or elicited by prolonged mechanical, chemical, thermal, or physical trauma.

In women with excessive growth of downy hairs on the face or extremities, pulling out the hairs, shaving, or applying greasy creams or depilatories can cause significant thickening of the hairs, which become coarse and stiff and begin to grow faster than usual. An application of a 10-15 percent solution of hydrogen peroxide makes the hairs colorless and less noticeable but does not curtail their growth. Depilatories (preparations which dissolve the core of the hair and do not affect the papillae from which they grow) can be applied in extreme cases and only on covered parts of the body. The best treatment consists of electroepilation with the aid of electrolysis, ultrahigh frequency, and diathermy.

M. A. ROZENTUL

References in classic literature ?
The ape-man rose, and Akut came slowly to his feet.
The ape-man was sore from the wounds that Molak had inflicted upon him, but he was inured to physical suffering and endured it with the calm and fortitude of the wild beasts that had taught him to lead the jungle life after the manner of all those that are born to it.
Thus, very slowly, the ape-man commenced the tedious operation of putting a thin edge upon his primitive hunting-knife.
"Who is that, I wonder," said Tennington to Rokoff, and as the Russian raised his eyes and met those of the ape-man full upon him, he staggered and went white.
Before the Russian could fire again the ape-man was upon him and had wrested the firearm from his grasp.
The Englishman looked his astonishment in spite of his most herculean efforts to appear courteous, and it required many repetitions of the strange story of the ape-man as told by himself, Jane Porter, and Lieutenant D'Arnot to convince Lord Tennington that they were not all quite mad.
And now Buto was upon him, the massive head lowered and the long, heavy horn inclined for the frightful work for which nature had designed it; but as he struck upward, his weapon raked only thin air, for the ape-man had sprung lightly aloft with a catlike leap that carried him above the threatening horn to the broad back of the rhinoceros.
Buto, angered and mystified by the strange disappearance of his prey, wheeled and charged frantically in another direction, which chanced to be not the direction of Tarzan's flight, and so the ape-man came in safety to the trees and continued on his swift way through the forest.
At the pit's verge the ape-man dropped to the ground in the center of the trail.
The ape-man had a keen admiration for a well-muscled, well-proportioned body, whether lion, or antelope, or man, and it had ever been beyond him to understand how clothes could be considered more beautiful than a clear, firm, healthy skin, or coat and trousers more graceful than the gentle curves of rounded muscles playing beneath a flexible hide.
The ape-man, naturally, had a slightly more comprehensive realization of the limitations of time; but, like the beasts, he moved with majestic deliberation when no emergency prompted him to swift action.
Dark clouds moving swiftly across the heavens now and again eclipsed the bright face of Goro, the moon, and forewarned the ape-man of impending storm.