15 month old - persistent cough, past bronchiolitis, constant ear infections, runny or blocked nose & persistent conjunctivitis. allergies????

Pediatrician visit: See your child's pediatrician for an allergy referral or an ENT referral who works with allergies. Blood tests for IgE can also be sent by your pediatrician. Daycare? That means more viral infections for your baby. If febrile, not drinking.not urinating, lethargic, to ER or urgent care.

Possible: Sounds like your toddler is reacting to something. Possibly an allergen but this could be viral if your child attends daycare. Continue to follow up with your doctor.

To tease out all : these chronic symptoms requires a history of environmental factors like passive smoking, attendance at daycare, drinking from a bottle while supine, etc.; family history of asthma & allergies; past response to infections, etc.The most likely reason for the chronic cough is asthma, aka Reactive Airway Disease, that requires bronchodilators. Seek referral to a Pediatric Allergist/Immunologist.