I'm sorry to hear about the persistent itchiness and patch on your right cheek. An itchy patch lasting a month could be due to various causes such as eczema, fungal infection, allergic reaction, or other skin conditions.

Given the duration and presence of a patch, it is important to have this evaluated by a dermatologist (skin specialist). They can examine the area, possibly perform tests if needed, and recommend appropriate treatment. Avoid scratching the area to prevent irritation or infection.

If you have access to antifungal treatments like Onabet Lotion (which contains sertaconazole nitrate and is used for fungal skin infections), do not use it on your face without a doctor's advice, as facial skin can be more sensitive and may require different management.

Recommendations:

• Schedule an appointment with a dermatologist for a thorough evaluation.
• Avoid self-medicating without professional guidance.
• Keep the area clean and avoid irritants or harsh skincare products.

If you experience worsening symptoms such as spreading rash, pain, swelling, or signs of infection, seek medical attention promptly.