Atopic Dermatitis, Scabies, et al.
Patients claiming to have Morgellons frequently present symptoms of Atopic Dermatitis (which is coded 691.80, amusingly I saw someone claim this was the insurance code for morgellons - that's probably what the doctor told them so they would get their prescription filled).
Atopic Dermatitis symptoms are:
How does Morgellons differ from Atopic Dermatitis?
And how does it differ from scabies - it seems with all these known diseases out there that cover the symptoms, why invent new diseases? Scabies actually is caused by a mite that burrows into the skin.