A member asked:

What causes cold symptoms only at night?

A doctor has provided 1 answer
Dr. Michael Rothman answered

Specializes in Internal Medicine

Is this a pattern?: If you have consistent symptoms which occur only at a certain time of day, these symptoms may be related to hormonal cycles that we all experience on a 24 basis. This is called your circadian rythym. For example, people tend to have more parasympathetic activity at night and parasympathetic activity can lead to runny nose, watery eyes, scratchy throat - all "cold symptoms".

Answered 5/27/2019

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