Psoriasis Eating Fish

A commercial came on about a psoriasis clinic. I was pretty sure I knew what psoriasis was (some sort of disorder where a person's skin grows too quickly in certain areas causing red splotches), but obviously had to verify this. I had the basic idea (sort of). After scrolling down a bit, I found the treatment options. There are various mainstream ways of treating psoriasis. One alternative method used in Turkey, however, is to have "Doctor Fish", which swim in the pools of spas, eat the psoriasis skin directly off of a person. That's gross....

Doctor fish are also called nibble fish, kangal fish, and...reddish log suckers...?