Thank you for your query.
Well looking into your problem , your symptoms are non specific . You didnt mention whether its a rash
, are the lesions itchy .Anyways it could be a skin problem or very rarely vasculitis
I advise you to go to dermatologist
to look for what kind of rash you are saying . Plus ruling out autoimmune disease
is also required if you doctor feels that.
Hope you are satisfied with the answer.
If you have any further queries feel free to ask.
Wish you good health.