Hi i have a 20month old boy and im really worried about him he has lost over 1lb6oz of weight 7months ago and also a month ago he lost 7oz more he does not gain weight easy and is very small weighing in at 16lbs he also has very bad asthma is on inhalers daily hes been referred to a pediatrician and genetic specialist for blood tests ect and has seen a dietitian i have no idea what might be wrong and im a very worried parent aswell as his weight loss and asthma is has constant chest infections ,loose nappy's and a pale complexion is there any conditions that you think this might relate to please help very worried mother rebeca thanks