My 1 yr old was diagnosed with seasonal allergies. but she coughs like she has a cold.. is it really allergies?

Don't assume allergy: If i blow pepper in your face, you sneeze & drain the same as those with allergy. I find babies have more congestion with scented cleaning products, perfume, smoke & other irritants than they do with animal dander or pollens. The tiny nasal passages that become very noisy with a little mucous or swelling gives many the wrong idea. Thease are not little copies of adult problems, their issues differ.

Questionable: It typically takes a full year to develop allergies. The cough makes me wonder regarding a cold, other upper respiratory infection, or asthma.