First we find out the cause of allergy
,what is your profession ? if you are handling some chemicals,cement etc that may cause this problem.
Have you ever had warms passing in the stool either tap warm,thread warm or round warms which may cause allergy.
When you had blood sugar done ?
Go for routine blood tc,dc,blood sugar,
Stool for ova and cyst
Take some anti histamines
regularly and multi vitamines supplements daily.
cream or Vaseline.
ok and bye..