I have a 4 year old which just recently was diagnosed with a sinuse infection. The doctor gave him amoxicillin, and also nasonex nasal spray. Ever since the day after using the nasal spray, there has been a major behavioral change in him, for the worse, at home and at school. He is acting out, worse then ever. Is this one of the symptoms of using this?? If so, We will not use it ever again. His teacher approached me today and asked what has happened to him, because it is like a 100 % change in him.

Thank you for any information.