U.S. doctors online nowAsk doctors free
Omaha, NE
A 29-year-old female asked:

4yr old son, positive strep culture today. now has rash in a few places on body. started antibiotics today. do i take him back in? high fever also!

2 doctor answers3 doctors weighed in
Dr. Joseph Bouvier
Pediatrics 26 years experience
See below: Rashes can be due to many factors and are oftentimes referred to as the result of abx when in fact they are more often due to viral illnesses. Abx take at least 48-72 hours to kick in and thus if being treated for a bacterial illness, time is needed and fevers can continue until the abx works. Rash in spots speaks viral to me but if generalized, who knows. See you doc - as seeing it is needed.
Dr. James Ferguson
Pediatrics 47 years experience
Strep rash??`: The rash of strep will usually appear about 12 hr into the first fever, after the germ has had time to set up & produce the chemicals that trigger the rash. Strep rash has a sandpaper texture & generally appears first around the genitals & folds of the arms before it spreads. Fever & rash are common & progress until the abx has had time to kill germs. I would call in, but you may just need time.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership
Last updated Jul 18, 2013
Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
24/7 visits - just $39!
50% off with $15/month membership

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.