Is a circle of red at the foreskin fold a sexually transmitted disease?

Preputial folds in a circle of red is a sexually transmitted disease, should be combined with the specific circumstances to judge.

Preputial folds in a circle of red is a more common symptom, more and underwear too tight, long sedentary, local temperature is too high and other non-pathological factors and bacteria, fungi, viruses and other pathogens caused by infection. If the urinary tract secretions test is positive, the presence of pathogens such as syphilis, genital herpes, and Neisseria gonorrhoeae usually indicates a sexually transmitted disease.