You can usually treat heat rash or prickly heat at home by making sure your child stays cool and dry and avoids getting sweaty. This might include:
To help your child with itchiness, you can give them a bath in lukewarm water. It’s best to avoid soap, because this can irritate your child’s skin. Use a soap-free wash or a simple moisturising bath oil if needed.
Pressing a cool damp cloth onto the affected area might also help your child feel more comfortable.