I read your question with interest. Thanks for writing in to HCM.
It is very possible given the location & the description they are bites & fleas et al may be implicated especially if you have carpets or pets.
Dermatology however, is a very visual line & as such, requires some clear visual digital photographs or to be seen on the ground by a dermatologist
nearest you for best results.
It may also require a skin biopsy
so in your case, best to visit a dermatologist nearest you.
Do try to use an ointment containg betamethasone-3% salicylic acid
preparation twice/day for 3-5 days & observe if they disappear but leave an area free for a skin biopsy if required at a later date.
Cheers & Good Luck!
Dr Praveen Rodrigues MD
Vikram Hospital, Bangalore, India