It sounds like you are experiencing razor burn or mild irritation, which is very common and easily treatable. For immediate relief, you can apply a thin layer of over-the-counter hydrocortisone cream (1%) to reduce redness and swelling. Soothing topical agents like pure aloe vera or lotions with colloidal oatmeal can also calm the burning. If there is significant itching, an oral antihistamine such as cetirizine or loratadine can help. For pain, mild oral anti-inflammatories like ibuprofen are useful. Keep the area clean, wear loose clothing, and avoid shaving until the skin fully heals. If symptoms persist or worsen, please consult a doctor.

The right treatment depends on the cause of the rash. For inflammatory or allergic rashes, a mild topical corticosteroid like hydrocortisone cream helps soothe itching and redness. If the issue is a fungal infection (like athlete's foot), an antifungal cream such as clotrimazole is recommended. For minor bacterial infections, an antibiotic ointment like mupirocin is highly effective. Because using the wrong ointment can sometimes worsen the condition, it is best to have a doctor examine the rash first for an accurate diagnosis. Meanwhile, keep the skin clean, dry, and avoid scratching to prevent further irritation.