Many virus are there in our environment. We do not know about all of virus. Some of virus are known to us.some of virus occur headache, cold cough

Asthma is an inherited allergen disease 50% of asthma occur by allergen substance like Smoke, Dust, strong-perfume, and cold. Asthma mainly two type :(1)Breath obstacle (2)Cough with –

Headache:usually headache is occur by Meningitis, tambourine brain, Influenza viral cause, abscess of brain, Or Sinusitis. Question: why do we feel 80% of headaches without above the reason?