In infants, lesions of miliaria crystallina tend to occur on the head, neck, and upper part of the trunk. Miliaria rubra tends to occur on the neck and in the groin and armpits.
Call your child's doctor if he/she is scratching significantly. There are medications that can help relieve the itching and, thus, prevent infection. Infected areas may need antibiotics. Call your child's doctor if the area develops pus, redness, crusting, swelling, or tenderness.
In cases of heat exhaustion, the skin will appear hot and flushed without any sweat. Your child may complain of dizziness, nausea, weakness, headache, confusion, or difficulty breathing. This can progress to heat stroke, so medical care should be obtained right away. Symptoms of heat stroke include a very high temperature, of 105°F or greater, decreased or loss of consciousness, or seizure.
Heat intolerance is recognized by a lack of sweating of the affected skin, irritable behavior, and a change in alertness. Call for emergency medical help if your infant shows one or more of the following symptoms:
- Your baby is sweaty and restless, then suddenly lethargic and sleepy. If your baby is awake, he or she may seem sort of "glazed" and limp or go from flushed to pale.
- Your baby shows signs of dehydration: a dry mouth, no tears with crying, cracked lips, sunken eyes, or has less than 1 wet diaper every 6–8 hours.
- A decreased desire or ability to feed.
- It feels like he or she has a fever.
- Get your child into the shade or into an air-conditioned space.
- Undress your child and apply cool compresses.
- Do not give fluids.
Dehydration may be treated with intravenous fluids, especially if there is vomiting. Heat stroke is treated by trying to quickly reduce the core temperature to normal. Immersion, evaporative, or invasive cooling techniques may be used in addition to rapid administration of intravenous fluids.