|get the tecnu extreme, comes in a wash and a clear gel, get both. Best thing ever !!!! It is expensive but worth ever penny. Also Zanfel, relieves the itch in 30 seconds, expensive too,I have both, I like the tecno best.
Send him to camp with the tecno wash and he should be ok.
Hope he feels better soon, my worse is over but in the heat I am still getting bumps where the worse was and its been a month.