Pit Picking 2 (2 of 8)
Same patient, different light. We pulled skin down toward the feet to reveal four pits. The pits are easily missed without the pull.
This demonstration of the way a pull on skin enlarges pits gives a hint of the way the same pull creates the pits and enlarges them. The weight of the buttocks pulls skin away from sacrum in a standing patient. All that keeps the buttocks from falling into our socks is a narrow line of attachment to the tip of the tailbone. If the pull grows strong enough, something will give way. The weakest point which gives way is skin where it is thinnest, at the bottom of a hair follicle. Or skin where a hair drills in to thin it, where skin is thinnest at the bottom of the drill hole.
The continued pull tends to enlarge the pits and pull in hairs that may lie in the cleft, thanks to barbed the scales on hairs which act like barbs on a fishhook. Hairs, as seen from a skin cell on the side of the cleft, loose hairs brush by. But as seem from a skin cell in the bottom of the cleft, loose hairs come like a railroad train; end on and driving.
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