Sleeping with an air conditioner blowing directly onto your face may increase the risk of facial nerve inflammation in susceptible individuals, according to expert warnings circulating this summer. While cold air is not identified as the sole cause of facial paralysis, prolonged exposure is flagged as a potential contributing factor — particularly for older adults and people with conditions such as diabetes or high cholesterol.
In brief
- —Direct AC airflow while sleeping may raise facial paralysis risk
- —Older adults and people with diabetes or high cholesterol are most at risk
- —Early symptoms include ear pain, facial stiffness, and mild twitching
Cold air as a contributing factor, not a direct cause
Air conditioners have become a fixture in homes during summer, but experts caution that allowing cold air to blow directly onto the body for extended periods — especially overnight — may not be entirely harmless for everyone.
The distinction experts draw is important: cold air is not described as the direct cause of facial paralysis, but rather as a potential contributing factor in certain cases. The underlying mechanism involves the effect of sustained cold exposure on blood circulation and nerve health.
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