Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern..
As per your complain it seems that itching in the bum/butt along with needle feeling inside can be due to causes like Poor hygiene maintenance, over wiping or cleaning, dryness in the anal area, pinworm infection,yeast infection,
contact dermatitis or
allergic reaction, hemorrhoids, anal fissures etc..
You need to consult a Proctolgist and get evaluated and he can do a clinical evaluatin and also advise investigations like swab culture to look for infections..
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..
Hope this information helps..
Thanks and regards..
Dr.Honey Nandwani Arora..