Nasal congestion is a frequent but often surprising symptom of early pregnancy. Affecting approximately , this condition—formally known as pregnancy rhinitis —can manifest as a persistent stuffy or runny nose that is not caused by allergies or infection . Pathophysiology: Why It Happens

Nasal congestion in early pregnancy is a common condition where the nasal passages become swollen, inflamed, and produce excess mucus. When this occurs without an allergic reaction or a cold virus, it’s clinically referred to as .

Before diving into the misery, it is helpful to understand the "why." This isn’t a virus. You aren't sick. This is pure hormonal warfare. During early pregnancy, estrogen and progesterone levels skyrocket. This hormonal surge causes the mucous membranes in your nose to swell and produce more mucus. Simultaneously, your blood volume increases by about 50% during pregnancy, which expands the tiny blood vessels in your nose (turbinates), leading to congestion.