Thanks for writing your query.
After reading your post, it seems that you are allergic to some clothings like woolen clothes.
Try to change the brand or material of your clothing.
Also get yourself investigated for Absolute Eosinophil Count
You can take antihistaminic like Fenofexadine 180 mg once a day to cure the allergic reaction
You can apply locally on scar, some skin cream containing steroid like betamethasone
for quick relief from itching.
If your problem persists, get yourself examined by a dermatologist
I hope this is helpful to you.