Sneezing is one of those shared human moments we barely think about until it becomes relentless. One minute it is a harmless “achoo” in the middle of a conversation. The next, it is a rapid, exhausting series that leaves you watery-eyed, congested and slightly embarrassed. Many people immediately assume it is a cold, dust, or a passing reaction that will resolve on its own. In reality, frequent sneezing is often the body waving a small red flag.
Medically, sneezing is known as sternutation. According to the National Institutes of Health (NIH), it is an involuntary reflex that forcefully expels air through the nose and mouth to remove irritants from the nasal lining. It is a protective mechanism designed to keep harmful particles out of the respiratory system. The World Health Organisation (WHO) notes that this reflex becomes exaggerated when the immune system reacts to substances it mistakenly perceives as threats.