Some excerpts from wikipedia:
"Morgellons (also called Morgellons disease or Morgellons syndrome) is a name given in 2002 by biologist Mary Leitao to a condition characterized by a range of cutaneous (skin) symptoms including crawling, biting, and stinging sensations; finding fibers on or under the skin; and persistent skin lesions (e.g., rashes or sores).
The Centers for Disease Control and Prevention (CDC) states that it is not known at present whether the condition represents a new disease entity, or whether persons who identify themselves as having Morgellons have a common cause for their symptoms, share common risk factors, or are contagious. A majority of health professionals, including most dermatologists, regard Morgellons as a manifestation of other known medical conditions, including delusional parasitosis. According to an article written by the Mayo Clinic staff, health professionals are divided in their attitudes about Morgellons: some believe it is a specific condition and expect it to be confirmed by research in the future; some believe it is not a separate condition, rather its symptoms result from other conditions, often psychological; and some do not acknowledge Morgellons disease at all or reserve judgment until more is known about the condition. The CDC has begun an epidemiologic investigation of the "Unexplained Dermopathy (aka 'Morgellons').""
"Symptoms usually include:
-Disturbing sensations of insect-like crawling, stinging or biting on or under the skin (formication)
-Skin rashes and lesions that do not heal
-Fiber-like filaments, granules or crystals that appear on or under the skin or that can be extracted from lesions (omg so grose)
-Joint, muscle and connective tissue pain, including fibromyalgia
-Cognitive dysfunction, including difficulty with concentration, short-term memory, and attention"
There's a whole youtube channel on morgellon's disease. You can find it by clicking on these words.
If you click here there is a particular video where you can see the fibers moving (not in the skin) but embedding is disabled. This video is kinda gross.
Video of guy who has it (none of the videos of it on youtube are rly clear, tbh):
And here's a video of some woman talking about her experience:
lazily hot-linked pix:
the fiborz coming out of the skin: