A nasal cold sore typically causes a burning sensation and blisters. Treatments like ointments and home remedies may help reduce symptoms. Cold sores are caused by the herpes simplex virus.

A sinus infection is inflammation of the sinuses ... If you have recurrent or chronic sinusitis, your healthcare provider may order CT imaging to look for the underlying cause. Microscopic examination ...

Nasal vestibulitis is an infection of the nostrils. This condition gets its name because it occurs in the nasal vestibule, the hair-covered area inside the nostrils. Nasal vestibulitis can be caused ...