I am 24 years old, went to a skin doctor since my penis skin has become tight and cannot be pulled back. If pressurised, leads to tearing of skin. M doctor advised me for diabetes test (Fasting was 82mg, PP was 162mg). He prescribed Candid cream for night, candid-b for morning and 6 Af 150 tablets. I guess He was not sure if it was due to high sugar or STD through my partner. 8 days have passes but there is not much improvement. Kindly advice.