itchy, strange sensations from area cyst was removed?

Hi,
Welcome to the ehealthforum and I am glad to help you out.

What you are having is a sebaceous cyst on the back. Treatment includes small surgical opening into the skin and removing the sac (excision biopsy). But recurrence is quite common which may be happening in your case. I suggest you to get the diagnosis confirmed from a dermatologist after examination.

Since you had surgical excision earlier, Carbon dioxide laser can be used to make small hole and cystic contents are gently squeezed out. Care is taken to keep the wall intact and then the cyst wall is taken out.

I sincerely hope that helps. Take care.