hi i had gone through your query and understand your concerns. i would come up with the possibility of FUNGAL INFECTION-RINGWORM-TINEA
CORPORIS; infection is conveyed by direct contact, less frequently ,by fomites like clothing.
Removing the sources of infection in infected nails,fomites,animals etc.
i advise you taking Homeopathic
medicines gives safe and permanent cure for your complaints
consult your local homeopathic physician for correct diagnosis of the case and remedy to fit your complaints
I hope this is helpful for you, thank you