Thanks for query,
It seems that you are having some allergy
giving you this problem.
Try to find out any allergen like having worm infestation,eosinophilia
,allergy to some food or some cosmetic like soap,talcum powder,duo spray etc.
As you got itching only on lower limbs
,it is possible you might have insect bite.
Try to find out the cause and avoid the allergen.
Meanwhile you continue with Clatrin as and when required.
Go for stool test
for worm infestation.
Ok and bye.