I have an ultrasensitive foot as well. initially i couldn't even let the sheets touch my foot or the pain was so bad i couldn't sleep. Desensitization with many objects helped a lot as well as warm epsom salts- i wear ultra light socks by puma - low cut - they dont press hard but expand gently - i got like 6 pairs for 5 dollars on sale and then went back and got another 6 more.