Hello. Thanks for posting your query here.

The symptoms and the features which you have described about your son, are classical for adenoid hypertrophy. Adenoids are aggregates of one of the types of cells called lymphocytes in our body. They are situated in the posterior or back end of the nose. They are situated junction of nose and throat. They play an important role in controlling the infection and in fighting with microorganisms. Adenoids play important role in the life of an individual till seven years of age, and then regress and become vestigial.

When adenoids enlarge the condition is called adenoids hypertrophy. These hypertrophied adenoids block the nose and obstruct the normal respiration. In order to maintain the levels of oxygen saturation the child or the individual tries to breathe with his mouth open. This results in narrowed upper lip, widened base this of the nose and other abnormalities that you have described In your query. This type of abnormality is called adenoids facies, which is due to adenoid hypertrophy.

In the present situation, I recommend you to take your son to an ENT specialist for further evaluation.

Hope this helps.