A painless white patch with mild oozing on the penis in a person with diabetes may be due to a fungal infection, irritation, inflammation, or another skin condition. Dapagliflozin can slightly increase the risk of genital fungal infections because it causes more glucose to be passed in the urine. Miconazole or luliconazole are antifungal creams and may help if the cause is confirmed to be a fungal infection, but it is better to get the area examined by a doctor before starting treatment, especially if there is oozing. Keep the area clean and dry, wash gently with water, and avoid using harsh soaps or applying steroid creams without medical advice. Maintain good blood sugar control, as high blood sugar levels can delay healing and increase the risk of infection. If the patch spreads, becomes painful, develops swelling, discharge, sores, or does not improve within a few days, seek medical attention promptly.