My child has been vomiting once a day, in mornings only. this has been going on for 5 days. there is no headache. the only other symptom is low grade fever of 99. i am fearful of brain tumor. could it be?

Unlikely to be tumor: Nothing is impossible but this would not be the first sign of a brain tumor. However, i would be concerned about possible dehydration and electroyte imbalances and adequate fluid intake. Please contact your pediatrician as intravenous fluids may be advised.

Unlikely: Headache, especially in early morning, and losing balance/unsteady gait are common symptoms in childhood brain tumor.

Lots of phlegm?: Many children collect mucousy secretions in nose and chest through the night. They often swallow it and develop a wad of phlegm in the morning that makes them throw up. Posterior fossa tumors such as medulloblastomas cause sudden empty vomiting for no apparent reason. Discuss these issues with your pediatrician. He can decide if further workup is warrented.