Rhinitis in the menstrual cycle, pregnancy, and some endocrine disorders.

By clinical experience, rhinitis has been suggested as caused by some endocrine disorders, but the evidence for this is vague, and the few descriptions almost anecdotal. Rhinitis of the menstrual cycle has been more described, although a solid picture is still lacking. Pregnancy rhinitis is therefore so far the only clearly defined "hormonal rhinitis." However, the cause of pregnancy rhinitis is not simply estrogen or progesterone, but seems multifactorial, and may possibly be associated with the PGH. Treatment consists mainly of information, physiological measures, and nasal saline washings.