The average weight for a boy of 21 months is 11.5kg so your little son's weight is really excellent.Your children have failed to respond to the usual treatments for a blocked nose. They both may have enlarged adenoids. It would be best to take them to be seen by an ENT specialist.
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal
advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.