Found this on my son’s scalp. Have no idea what it is and we can’t get a doc appt soon. Tips?.

While waiting for a doctor, keep the area clean with a mild shampoo and avoid harsh scrubbing. Do not share combs, brushes, hats, pillows, or towels. If you suspect a fungal infection, you may try an over-the-counter antifungal shampoo containing ketoconazole or selenium sulfide 2–3 times per week. This may reduce spread but often won’t fully cure it without oral medication.

Seek urgent care if you notice rapid spreading, severe swelling, pus, fever, or painful swollen lymph nodes. Even if symptoms improve, scalp infections in children often require prescription treatment.