What Causes Pregnancy Rhinitis [portable]

Pregnancy is a state of generalized vasodilation (relaxed blood vessels) to support the uterus and placenta. This affects the nasal vasculature similarly, leading to reduced nasal airflow and a sensation of stuffiness.

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. what causes pregnancy rhinitis

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: Pregnancy is a state of generalized vasodilation (relaxed

Produced by the placenta, this hormone is strongly associated with nasal congestion. It may stimulate angiogenesis (the creation of new blood vessels), increasing the surface area of the nasal turbinates and leading to more blockage. 2. Increased Blood Volume and Fluid Retention It usually resolves on its own within two

This hormone relaxes smooth muscles and acts as a vasodilator, which can indirectly contribute to mucosal swelling in the upper respiratory tract.