Hi welcome to Health care magic forum.
Thanks for choosing H.C.M.Forum.
You have got a rough upper lip
, splotchy, dark,spotty, With tingling
and burning sensation.
It appears to be a fungal infection
, Or as you suspect it may be an allergy
to some cosmetics, or drugs. If the allergy causing things are not stopped the allergy can continue, and may lead to infection.
I advise you to consult a dermatologist
for diagnosis and treatment.
Wishing for a quick and complete recovery.