My left groin started itching today, and I noticed there was some hard skin peeling off. I managed to remove it, but now there's a red patch on the skin, and it's painful. My right groin seems perfectly fine though. What could be causing this, and should I be worried?

You may be experiencing a fungal infection in your left groin area. You can try using an antifungal cream such as Clotrimazole 1% cream. Apply a thin layer to the affected area twice a day for 2-4 weeks. Make sure to keep the area clean and dry to prevent further irritation. If the symptoms persist or worsen, it would be best to consult a doctor for further evaluation and management.