Prickly heat is one of the most common acute skin inflammations in summer, caused by blocked sweat pores. It often occurs on the scalp, forehead, neck, chest, armpits, and groin. The skin becomes red, followed by the appearance of small, red papules or vesicular rashes, densely clustered. Some of these papules can develop into pustules. After developing prickly heat, intense itching or pain can occur. Therefore, in summer, it is important to keep indoor ventilation and cooling, and children's clothing should be loose, soft, and highly absorbent.