My baby was 4 years old Has cold for last 3 months regularly. Its symptoms is like starting running nose then, blocked nose, then snoring, then getting heavy cough while sleeping, then chest cold, then get like cure. But not cure, again it will be start from running nose, blocked nose, snoring, cough etc. Its happening last 3 months randomly. We taken Levocitrize, asthalin, levolin (as per doctor advice) etc. Etc. But still not cure. Please advice what we can do? Thanks.