Nasal congestion or stuffiness is the feeling that accompanies a cold or mild allergies.

Nasal blockage or obstruction is a more constant blockage that doesn’t seem to be related to a cold, infection or seasonal allergies.

Trouble breathing through the nose is a more severe and persistent breathing difficulty that interferes with normal, daily activity.

Trouble sleeping is experienced because your breathing difficulty is accompanied by snoring, disrupted sleep, restlessness or sleep apnea.

Inability to get enough air through the nose during exercise or exertion is a feeling of being ‘starved’ or deprived of oxygen while exercising or exerting yourself.