Acquired Localized Hypertrichosis

Acquired Localized Hypertrichosis

Years earlier, when I first became aware of injuring induced hair growth, I was not totally surprised. We have actually become aware of many examples of older guys suddenly re-growing hair in areas of the scalp that have been entirely bald for decades. My favorite example is of the 78-year old man who inadvertently fell under a fire, charred his scalp, and got hair growth in return.

“Although interesting, it is tough to see how this kind of stimulation could be applied therapeutically”.

Scalp Burning Hair Regeneration
Hair growth after a burn injury. Hair Growth After Cast Removal My current update on Follica made me think about the interesting phenomenon of hair growth after cast usage. Lots of people who get arm or leg injuries have to use a cast for several months. Upon elimination of the cast, some individuals report a substantial boost in the underlying body hair( i.e., hypertrichosis). Today, I inspected to see if there were any studies that discuss this unusual negative effects from cast use. Lo and witness, I discovered some intriguing ones with lovely amazing prior to and after images. The listed below one is from a research study from China entitled: “Acquired Localized Hypertrichosis Induced by Internal Fixation and Plaster Cast Application”. The hands come from a 15-year old young boy who had to get a surgery and use a cast after a fracture.

The hair growth image in the real study is clearer since I optimized the one below. The surprising thing is that this person has definitely no hair at the back of the left hand. i.e., this is not simply existing body hair becoming thicker. This is “new” hair growth after 6 weeks of cast usage on his injured right hand. Sort of like Follica’s “de novo” hair production idea. The brand-new hair vanished 4 months after the cast was removed.

Hair Growth After Cast Removal
Acquired localized hypertrichosis (ALH)after cast elimination. Source: Annals of Dermatology. Gotten Localized Hypertrichosis It is not surprising that prolonged friction and enclosure from the plaster cast might make existing hair grow thicker. Nevertheless, the creation of brand-new hair is extremely unforeseen. Yet another example from Hong Kong shows hair growth on the right leg of a 28-month old child.

Localized Hypertrichosis
That leg had actually been in a cast for 6 weeks after a fracture. Localized hypertrichosis after cast elimination. Source: Hong Kong Medical Journal. Per the authors of the first research study that I went over above, the gotten localized hypertrichosis(ALH)arises from:” persistent inflammation, inflammation, friction, and occlusion “by the plaster of Paris cast. And yet another example from Hong Kong. This time on the left lower arm (of a 16-year old boy)that had remained in a splint. Note once again that there is no body hair at all on the right forearm.

Hair Growth after Splint
Hair Growth after Splint. Source: Case Reports in Pediatrics. If I just found examples of thicker hair growth, I would have not composed this post. Nevertheless, all three examples that I presented above show brand name brand-new hair growth.

Although this post is not precisely associated to wounding, I can’t help however think of the following quote from Follica:

“Following skin disturbance, cells that migrate to assist recovery are forced to decide: Should I make epidermis, or should I make a hair?”

Of course everyone would never be so indecisive.