<unk>  is characterized by a harsh barking<unk> , and becomes persistent for weeks to months. The<unk> 's hallmarks are severe frequency, often a<unk>  every 2–3 seconds, and the lack of other symptoms such as fever. The patient can have trouble falling asleep but once asleep will not<unk> . Absence once asleep is considered essential.
Habit cough
Chronic cough
Allergies in children
Nasal congestion
Hajj Cough
Smoke
Sneeze
Night Sweats