Yes, you need aa good hairdresser. But you do not need to go bald, you could go for an elfin cut and then grow back from there.
You have my sympathy. Some years ago I had very bad eczema on my scalp, mainly on the top of my head, what was normally dead straight and very dark hair,on the top of my head, went a gingery red andd very curly.
My DH, not unkindly, said that the top of my head looked like the top of a coconut - and he was right!
But six months after the eczema went my hair was back to normal. So relax, your friends and family know what your hair was like, so won't look at you critically and what does it matter what people you do not know think?
Get your hair cut neatly, and a short as practical and then leave your hair alone and let it recover. This time next year it will all be just a bad experience yu had - and in two years a funny story you tell.