Thanks Londres70, you are of course correct, it's just that I was wondering if anyone had experienced something similar as the Docs don't always know. It's taken me a while to respond as the pain has been unbearable. Thankfully, it is now receding following use of Amitriptyline at night, and codydramol during day. As for shampoo, I used baby shampoo which was really gentle. Thanks again.
I would recommend asking the physician managing your care for instruction.