hello and welcome
this is a very comprehensive fact based scientific article detailing
-the history of the disease
-its misclassification as a delusional disorder
-the nature of the fibres - many photos and slides
-the presence of tick born pathogens in the skin of Morgellons patients
-treatment with antimicrobials
https://www.ncbi.nlm.nih.gov/pmc/articles/pmc5811176/its generally now understood to be a manifestation of chronic lyme disease - or possibly lyme disease with bartonellosis (co infection with bacteria from the genus Bartonella)
the fibres have been well documented by several different groups of researchers now - and are made of keratin.
the same substance as our hair and nails are made from - rather than of non-human or insect origin as some claims on the internet have previously stated.
sorry to hear your son is dealing with this its obviously very distressing and hard to get proper medical treatment for
i and many others here have reported pustules or blocked pores with hard material in them - which may be a precursor to Morgellons type fibres
many have reported these symptoms resolving with proper treatment for lyme disease and co-infections - which makes sense given that its seems clear that that is the underlying cause -
i think the best course of action is to find a LLMD who has treated Morgellons patients before ( all of them i would imagine)