You are having pruritus
In your case it may be viral infection or paracetamol
Blood tests may be done for the diagnosis of disease inducing fever.
Take anti histaminics .
Take steroids in tappering dose.
Shift to nimesulide
Antibitics may be needed for infection.
Avoid soap on feet.
You consult dermatologist
I hope you got my answer.
Dr. Ilyas Patel MD