It is recommended to go to the hospital for relevant examinations to clarify the possible causes: 1. Chronic prepuceitis, chronic prepuceitis after the acute period has passed, can appear local foreskin thickening, whitening, touching when the texture is tougher, as if touching the feeling of leather. This is accompanied by poor elasticity or pain during erection, or secondary changes such as circumcision. The actual fact is that you will need to go to the dermatology department for a consultation and give relevant treatment.