The climate is characterized by hot days and cool nights, and is considered healthy, though the daily change tends to provoke bronchial, catarrhal and inflammatory diseases.
The structural changes occurring in the bronchi in catarrhal bronchitis have also been ascertained, and, as in the case of pneumonia, have been shown to be frequently excited by the presence of a microphyte.
In certain pathological conditions an excessive formation and discharge of such material is usually associated with catarrhal changes in the epithelium.
Lotio Rubra, the familiar "Red Lotion," a solution of zinc sulphate, is widely used in many catarrhal inflammations, as of the ear, urethra, conjunctiva, &c. There are also innumerable ointments.
In visceral gout and chronic catarrhal conditions of the stomach a course of alkaline waters is distinctly beneficial.