Answer:
In order to state a proper diagnosis, the pediatrician may suggest the mother to take her child to an otolaryngologist (a nose, ear and throat specialist), who will determine the cause and severity of the condition the child presents and search for the most efficient treatment or advice to perform a surgery if necessary.
Step-by-step explanation:
It may be required to do some tests according to the symptoms and signs the child presents at the time of being examined. Depending on the case and upon results of an upper respiratory exam, throat culture, allergie testing, nasal endoscopy and a sleep study, the M.D. will determine what treatment is the most adequate or whether it is necessary to remove the tonsils, partially or totally.
I hope it helps!