Heat rash

Maria

My baby seems to get heat rash mostly at night behind her head/neck/ears area. I don’t dress her up in a lot of layers and that area stays free from clothing anyway. It’s very cool in our house and the temperatures are cold outside. But she seems to get sweaty while laying down and poor thing starts scratching at it during her sleep. I’ve fanned it and tried eczema lotion for the itchiness. Any suggestions??