My son is 3 years of age and from birth till now he always suffer from cold cough flu chest congestion. help?

Recurrent infections: Children will experience more colds and infections especially if they attend daycare, exposed to cigarette smoke or were forn very premature. Chronic or recurrent congestion, cough may indicate allergies and/or asthma. Less common is an immune system problem predisposing children to recurrent, severe or unusual infections. An allergist can assist in sorting these out.