What is circadian sneezing?

Circadian sneezing is a phenomenon where individuals experience a recurring pattern of sneezing that aligns with their circadian rhythms, typically occurring at specific times of the day, often in the morning or evening. This condition is thought to be linked to the body's internal clock, which regulates various physiological processes, including the immune system and respiratory functions. While not widely studied, some people report that their sneezing episodes coincide with changes in light exposure or other daily routines.