How is there a little red pimple on the glans?

This situation can not rule out the possibility of balanitis prepuce, and its causes are more common in prepuce too long, phimosis, masturbation, traumatic infection and so on. It leads to exfoliation of keratinized epithelium and secretion of glands, which is beneficial to the formation of other bacteria.

Good reproductive conditions cause inflammation. It is recommended to go to a regular hospital for examination and treatment. I wish you health!