Hello, my son is nearly 5. He takes seretide, twice daily, and montelukast. His asthma is much better, however,he often seems tired and constantly has dark patches under his eyes. He has around 11 hours sleep a night. Ive read allergies can cause this,he does have a dust mite allergy.Im just not sure what we can do for him? He is a fussy eater too and doesn't eat any meat and little dairy.