My almost 3 year old daughter took a bath yesterday morning, and she started itching. i didnt notice a rash yet...Yesterday afternoon i picked her up from babysitter and noticed small rash on arm the color of her skin...We were then outside in the heat for 2 hours, and she had it in blotches all over her and were now red...Once she cooled off they completely went away...This morning after bath, her entire bottom was red bumpy and itchy. Also were areas of arms and legs. Went completely away after 30 minutes...After nap today her face where she slept had outbreak, also went away...We played outside started to breakout came in went away. Seems like heat rash but why does it come and go? Will it ever quit comin back...Also my sister just called and said her twin boys just got out of the bath and they too have it now??