Hello,
Hands, foot and mouth disease is caused by Coxsackie’s virus. Symptoms of fever, poor appetite and sore throat can appear three to five days after exposure. A blister-like rash on the hands, feet and in the mouth usually develops one to two days after the initial symptoms. Usually the symptoms last for 1 week but in adults it may last a little;e longer or may recur.
My sincere advice would be to consult a dermatologist and get it evaluated. To confirm the diagnosis you can get viral antibody titres done. It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your dermatologist. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
My son had his rash for 3 weeks, so hang in there.