All these symptoms suggest that your husband might be suffering from upper respiratory tract
infection(most probably viral infection)
The management consists of:
1. Drinking of warm fluids to reduce throat pain
2. Antihistamines to provide symptomatic relief from cold & cough.
3. Anti tussive syrup to take care of the cough.
4. Analgesics to take care of pain & fever.
So...it will be better to consult your GP & start treatment.
Investigation like complete blood count
& X ray
of paranasal sinus
will be helpful in clinching the diagnosis.
Wishing him a speedy recovery.
Thanks & take care.