Recently, I just returned to school and changed the environment. Two days after I came back, this little red bag appeared on my heel. At first, I thought it was a mosquito bag. Now I find that it hasn't disappeared for many days. It has always been very red and has a convex hard feeling. It itches very badly when I scratch it. In the picture, I took it after scratching it
Considering and analyzing your situation, you should be caused by the factors of allergic dermatitis, so avoid scratching and stimulation blindly. You can use calamine lotion for cleaning and treatment first, and you must pay attention to your diet at ordinary times, which must be light and easy to digest.
The process performance of herpes red spots on local skin tissue of the body should be the state reaction performance of allergy or fungal infection dermatitis. After active inspection and confirmation, take local tissue topical paeonol ointment or dermatitis drugs for local treatment.
For your symptom, it is suggested that you can consider applying topical drugs to the affected area for treatment first. You can use hormone drugs, but you must apply them evenly in a small amount, not too many times. You should also pay attention to your diet and avoid eating irritating food.