Heat rash is a common skin irritation in the summer. Hot weather and high humidity cause the capillaries on the skin to dilate, creating conditions for bacteria to enter and cause heat rash. The heat also causes children to sweat more, dirt and sebum stick to the body, blocking sweat glands, causing heat rash.

Heat rash is a common skin inflammation in children in the summer, when the weather is hot. Heat rash causes skin damage in the form of blisters, red papules, concentrated in patches on the skin, or scattered all over the body. Heat rash causes itching, making children scratch, easily leading to skin damage and infection.

Heat rash occurs when sweat glands are blocked, the disease often occurs in hot, humid summer weather and most of the disease appears in children, especially infants. The disease is usually benign and can disappear on its own when the weather is cooler, however, some things need to be noted when treating heat rash for babies to avoid causing skin infections that aggravate the child's condition.