In people with diabetes, red spots, cracked skin, or irritation on the head of the penis are commonly caused by fungal infection, irritation, dryness, or inflammation, especially if blood sugar levels fluctuate. Good diabetes control and proper hygiene are very important for healing. Keep the area clean and dry, avoid harsh soaps, and wear loose cotton underwear. A doctor may prescribe antifungal or mild medicated creams depending on the exact cause after examination. Premature ejaculation may also be linked to stress, anxiety, diabetes-related nerve changes, or erectile difficulties, so proper evaluation is important before starting medicines. Avoid using steroid creams or random over-the-counter sexual medicines without medical advice because they may worsen the condition.