My foreskin has been hurting for a long time. What illness could it be?

Patient's question:

Patient Age: 25
Detailed Condition and Purpose of Consultation: To see if there is really a disease
Duration of Current Illness: 2 weeks
Current General Condition: Frequent pain in the foreskin
Medical History: None
Previous Diagnoses and Treatment History and Outcomes: Not diagnosed, feel embarrassed to go to the hospital
Ancillary Examinations: None
Other: None

Doctor's answer:

Suggested medication: Apply povidone-iodine. Pay attention to frequent cleaning and changing underwear. I hope my answer helps you. Wishing you good health.