Haven’t had surgeries for this, though probably would consider doing so if my body were as sensitive as yours, as I also loathe those sensations. Knew someone who was as tormented as you seem to be, and it seemed like absolute hell.
Unfortunately, any surgery has a risk of increased sensitivity. That can mean pain rather than arousal, though the two are closely linked.
Might make sense to consult a neurologist or neurosurgeon as they have more comprehensive, relevant training in this stuff.