Friday, September 5, 2008

More than just bed-head: UHS

I came across an article on a news website today that I read and thought, "this has got to be a joke." The article was entitled "The tangled truth about uncombable hair," and it began with the following sentence:
"If ever there were a disease designed to vex a mother, it’s uncombable hair syndrome (UHS)."

You're joking, right? Uncombable Hair Syndrome? They came up with a disease name for when someone has messy hair? As I read on, I became more disbelieving; my disbelief was not helped by the statement that it was first described 35 years ago in a French medical study, which called it "cheveux incoiffables." Okay, now I know you're pulling my leg, right?

Actually, much to my surprise, no! This story is legit. This syndrome is legit. It may sound wacky, but it's for real. Some people have messy hair. Some people have hair that is easily tangled. Some people have truly horrible cases of bed-head when they get up in the morning. But others have truly uncontrollable hair.

Uncombable Hair Syndrome is also known as Pili trianguli at canaliculi, or Spun Glass Hair. This syndrome can manifest itself in children anytime between the ages of 3 months and 12 years old. While these kids start out with hair that looks thin and glassy (though still relatively normal), the hair begins to become drier, curlier and lighter in color. Eventually, it stands straight out from the scalp and is literally impossible to comb flat.

The reason for this disorder lies in an abnormality in the hair shafts of the affected individual. When examined under high magnification, these hair shafts have 2 unique qualities. First, their cross-section is shaped like a kidney bean (instead of a circle). And second, there is a deep groove or canal that runs down the entire length of the hair. This makes the hair unable to bend like normal hair without such a groove. So it stands straight out from the scalp. But here's the good news. Kids with UHS usually outgrow it. So while their hair may be unmanageable now, it'll get better as they get older.

But in case you're wondering whether your messy hairdo could be the result of UHS, the odds are quite strong that it's not - UHS is an incredible rare syndrome. In the last 35 years, barely 100 cases have been reported in the medical literature.

It's far more likely that you just have easily tangled hair.

Wednesday, September 3, 2008

In honor of the start of school

I thought I’d write an entry in honor of all of the children, teachers and administrators in our country who are just starting up another year of school. The start of the school year brings lots of exciting opportunities, does it not? New books, new subjects, new friends, new challenges – oh, and of course, the possibility of new illnesses. Sometimes school seems the perfect place for the propagation of viruses, bacteria and other assorted bugs. And it’s one of these bugs I want to discuss today – the ever-popular, ever-fun, and ever-exciting pediculosis. Otherwise known as head lice.

What are head lice? A head louse (singular, as opposed to the plural form lice) is a small, wingless insect that lives among human hairs and feeds off small amounts of human blood. How small are they? Lice go through three stages during their life cycle. They start out as eggs, otherwise known as nits. These are very small, about the size of a flake of dandruff. About 7 days after the nits are laid by a female, the lice hatch into the nymph stage. Nymphs look like adult lice, but they’re much smaller. At this point, they need human blood to survive to adult. If they feed enough, after about 7 days as a nymph, they will mature into adult lice, capable of laying their own nits. Adult head lice are tan to grayish-white and about the size of a sesame seed, easily visible to the naked eye; so if you’re going to spot an infestation, it’s the adults you want to be on the lookout for. And adult louse can survive for around 30 days as long as it keeps feeding; if it falls off its human’s head, however, it will die within about 2 days.

Here’s a few facts about head lice that I did not know before I started looking into them:
Head lice cannot survive on any animal besides a human. That means you cannot catch head lice from your pets – cat or dog blood will not sustain a louse.
Head lice cannot jump or fly from head to head. The only way to pass head lice among people is for them to come into direct contact with hair that has a nymph or an adult louse clinging to it. Once that contact is made, the louse can transfer itself to the new person’s head and begin feeding.
Head lice have very strong claws that allow them to hang on very tightly to a strand of hair.
Dessicated head lice and head lice nits have been found on the hair and scalps of Egyptian mummies.
It is believed that 1 in 10 kids in America will come down with head lice at some point during their lives.

Okay, now that I’ve given myself the creeps over imagining all these little bugs crawling over my scalp…