Babies & Children

Hi there. My two year old has eczema on her arms, legs and chin. I recently started using the 24-hr rescue balm for her and for some reason it stings when I apply it to her arms, but is fine everywhere else. Any idea why this might be the case? I figure if it was an ingredient triggering, it would sting on all the eczema so I'm a bit perplexed! Any insight would be greatly appreciated.