My4 week old has a rash on his face, neck, scalp and back. also his temp is ninty-nine point one. should we go to the er? hes not really acting sick.

Wait day or 2: Most mild rashes with minimal fever settle down rapidly in day or 2. Seek medical advice if fever reaches 101 or rash gets worse.

Call pediatrician: Many baby rashes are not serious, some are deadly. Your pediatrician can help you decide which this is and whether emergency care is indicated.

Depends: Most 4wk kids have a variety of rashes due to hormones passed in pregnancy or minor skin irritants.If on saclp& back it may be an oily skin.A rectal temp of 99.1 is normal but 100.4 or higher might be germs passed at birth & a reason to visit the er even if baby is acting nl. Monitor the temp & discuss the rash with babied dr during regular hours.