What Causes Pregnancy Rhinitis ((exclusive))

Pregnancy triggers a dramatic increase in blood volume—up to 50% more than pre-pregnancy levels—to nourish the developing fetus.

Note: If you are pregnant and experiencing nasal congestion, always inform your obstetrician or midwife. While pregnancy rhinitis is common and harmless, other causes (like high blood pressure-related pulmonary edema) are rare but serious and should be ruled out. what causes pregnancy rhinitis

The causes are multifactorial, stemming primarily from the hormonal and physiological changes required to support a growing fetus. Pregnancy triggers a dramatic increase in blood volume—up

The primary theory behind pregnancy rhinitis is the role of hormonal changes during pregnancy. The increase in estrogen levels during pregnancy leads to: The causes are multifactorial, stemming primarily from the

The autonomic nervous system, which controls involuntary bodily functions like heart rate and digestion, undergoes changes during pregnancy. This can lead to "vasomotor instability," where the blood vessels in the nose overreact to stimuli. This means the nasal blood vessels may swell unpredictably, leading to intermittent congestion or a persistently runny nose.