I've found this problem for more than 10 years, occasionally itching. The ward did not expand or improve.
Hello, if you find that this situation has lasted for a period of time, considering the possibility of eczema or Candida infection, it is recommended to see a dermatologist and judge the cause according to the examination results. You can wash with local lotion instead of scratching regularly, wear cotton loose underwear and try not to eat spicy and irritating food.
According to the picture above, it looks like eczema, with ulceration or local tissue lesions. Targeted treatment can only be carried out by finding out the cause through inspection. It is recommended to go to dermatology or male specialist for examination. At ordinary times, local dryness and cleanliness should be kept to avoid infection.
From the picture you sent, it should be considered that there is a high possibility of dermatitis or eczema, and your medical history has been so long, so the first thing is to pay attention to local cleanliness and hygiene, eat less spicy food, see the dermatology department as soon as possible, and then actively take treatment measures under the guidance of the doctor.