What — Causes Pregnancy Rhinitis

Pregnancy rhinitis typically begins in the second or third trimester, as hormone levels and blood volume reach their peak. It usually resolves on its own within two weeks after delivery as hormone levels and blood volume return to normal.

Unlike infectious or allergic rhinitis (where a virus or allergen is the trigger), pregnancy rhinitis is driven by physiological changes specific to gestation. The exact mechanism is multifactorial, but research points to the following key causes: what causes pregnancy rhinitis

By the third trimester, a pregnant woman’s total blood volume increases by nearly 50%. This systemic increase puts more pressure on the microvasculature of the nasal mucosa, causing the tissue to engorge and swell, which physically narrows the nasal passages. Pregnancy rhinitis typically begins in the second or

This could be due to factors such as nasal obstruction, sleep disturbances, or general discomfort affecting their self-reported si... PubMed Central (PMC) (.gov) Rhinitis as a cause of respiratory disorders during pregnancy The etiology remains to be clarified. The rhinitis may be caused by numerous substances and hormones secreted during pregnancy (PG... National Institutes of Health (.gov) Pregnancy Rhinitis: What Is It, Treatment, and More - Osmosis Feb 4, 2025 — The exact mechanism is multifactorial, but research points

Pregnancy involves a complex immunological shift. The mother’s immune system must adapt to tolerate the fetus (which is genetically half-foreign).