Rhinitis
nasal catarrh. In an acute form it is commonly known as a "cold in the head," and it is caused by bacilli attacking the mucous membrane of the nose when the resistance is lowered by cold or by mechanical irritants. Some chronic cases are caused by reflex irrimechanical irritants. Some chronic cases are caused by reflex irritation, resulting from over-stimulated sexual organs. Rhinitis is also a symptom of measles and occasionally accompanies other infectious diseases such as diphtheria or scarlet fever.