Hi, I am Dr Sonia S V. I am an ENT Surgeon & Head & Neck Specialist. Children this young normally shold not snore unless they have a cold. Snoring is commonly due to adenoids in this age group. Adenoids is a tissue similar in nature to the tonsils which is loacted right at the back of the nose in the area called the nasopharynx. The ear and the nose are connected to each other by the eustachian tube which also lies in the nasopharynx. Adenoid infection or enlargement can affect the eustachian tube and lead to accumulation of fluid in the middle ear affecting the hearing of the child.So your child will snore and also suffer from hearing loss. Other problems due to adenoids is nose block, recurrent cough and cold,ear pain,recurrent throat infections etc. In some children with adenoids,since their breathing is further compromised during eating they also have problems eating. Visit an ENT specialist in your locality .Adenoids can be diagnosed endosocpically or via an Xray. Sometimes clinical evidence is very obvious and your ENT Surgeon may not even get an Xray.Hearing loss needs evaluation with a tympanometry.A pure tone audiogram in a 4 year old is often difficult but most 4 year olds will cooperate for a tympanogram. All the best Dr Sonia Suprabha Venugopal Consultant ENT Head & Neck Surgery,Bangalore Website:http://drsoniasv.webs.com