Hi Doctor, i was just told my daughter in-law took their new born 2 week old daughter to hospital last night...they found her foaming at the mouth and choking in her crib. She also has a red rash. Now 11 hours later she is hooked up with monitors etc but no other episode has occurred? She is a breast fed baby.
The condition of the greatest concern is infection affecting the brain. The coughing and foaming can occur as the result of a seizure that occurs because of the infection.  Especially at that age, it is critical that the child be thoroughly evaluated and treated immediately, so its very good she's in the hospital.  Quick treatment can be lifesaving and also minimize any damage.  The appearance of the rash is highly suspicious for infection as the underlying cause.