Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems that itching in anus with a rash can be due to causes like:
-Rash can be commonly due to
Herpes Zoster infection that is a viral infection while other causes can be:
-Poor hygiene maintenance,
-Over wiping or cleaning.
-Dryness in the anal area.
-Pinworm infection.
-Yeast infection.
-
Contact dermatitis or
allergic reaction etc..
As of now you should keep the area clean but avoid vigorous wiping..
Wash the area gently with water and a mild moisturiser based soap..
You should apply
Zinc oxide based ointment or Petroleum jelly over the area..
Wear loose fitting and cotton undergarments..
You can also apply steroid ointment to relieve itching but do not use for a long duration for more than ten days to two weeks..
You should avoid scratching the area to prevent infection..
If still it does not improve
consult a Proctologist and get evaluated and a proper diagnosis and treatment of underlying cause can relieve the symptoms..
In case of viral infection oral and topical antiviral medications like Acyclovir, Valacyclovir etc..
Hope this information helps..
Thanks and regards..
Dr.Honey Nandwani Arora..