The best remedy to remove the black color around your skin is to get doctor's spirit and wipe the area daily at least once with it ,and then apply coconut oil mixed with camphor over it .
I thought of something funny - You are not a black belt in karate or anything! I know that was dumb it just made me laugh.
I am only guessing at what has caused it first. Is the band around your waste - Does it match the band of where your trousers may sit?
Because if you can work out what may be causing the irritation you will be half way there.
If it is around your belt area - Do you tuck your shirt in or leave it out. Just thinking whether it is something irritating your skin from the pants or something tucked in.
The colour may not impress you right now but don't do anything that may aggravate the already aggravated skin. Keep it well moisturised with a balm or salve or something.
The colour is not the problem right now - finding the source of the irritation is! If you do not it may spread on you and that is definitely not going to make you happy hey.
Look forward to hearing that your problem is soon solved. Good luck. Don't panic just investigate it.
Your skin rash could be severe eczema or some type of skin allergy. If it is eczema, shea butter or vitamin e will do the job with healing. I would consult a doctor for a better diagnosis.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.