Severe itching around the penis and foreskin, along with greenish-white patches, pain, and no improvement after antifungal treatment, suggests that the problem may not be a simple fungal infection alone. Conditions such as balanitis (inflammation or infection of the head of the penis), bacterial infection, poor hygiene, skin irritation, diabetes, or even certain sexually transmitted infections can cause similar symptoms. Since the symptoms have been present for about 20 days and are not improving with Onecan tablets and Fungiguard cream, it is important to get examined by a dermatologist or urologist rather than continuing self-medication. Avoid using multiple creams without medical advice, especially creams containing steroids, as they can sometimes worsen infections. Keep the area clean and dry by washing gently with plain water, retracting the foreskin carefully if possible, and drying the area properly afterwards. Avoid harsh soaps, tight underwear, scratching, and sexual activity until the condition improves. If you are diabetic or have not checked your blood sugar recently, it would also be advisable to do so, because uncontrolled diabetes can increase the risk of recurrent genital infections. A doctor may recommend tests such as a swab, urine test, or blood sugar test to identify the exact cause and provide the correct treatment, which may include antifungal, antibacterial, or anti-inflammatory medicines depending on the diagnosis. Early medical evaluation is important to prevent worsening of the infection and reduce discomfort.