Doctor, I've been black in the root of my thigh for about a month. It's itchy and I can't help scratching it with my hand. Here are the pictures. What is this disease? How did it happen? How to treat. I am a very obese person. Height 180, weight 230 Jin.
Your situation is caused by severe obesity. After obesity, it will lead to increased friction between your legs. Your height is 180cm and the standard weight should be 75kg. It is suggested to adopt scientific and effective weight loss methods, which is realized by strictly controlling diet and long-term exercise.
In your case, consider a symptom of skin itching caused by a pigmentation. Be sure to use some lotion to relieve symptoms. If long-term obesity causes this pigmentation, it is recommended to take more exercise so that you can amend your symptoms amicable.
In this case, I personally suggest the patient. The second is to send me the picture to have a look. It is mainly to see what the problem of local blackening is. There are many reasons that can lead to local blackening clinically, but in this case, you should first rule out the problem of eczema.