Once paralysis sets in, symptoms become more pronounced: difficulty raising one eyebrow or fully closing one eye, drooping facial muscles on one side, a drooping mouth corner when smiling, trouble speaking clearly or eating, and either excessive tearing or dryness in one eye. These symptoms typically affect only one side of the face.
From anti-inflammatory drugs to surgery: treatment depends on severity
There is no single treatment protocol for facial paralysis. Experts note that the approach depends on both the underlying cause and the severity of the condition.

For mild cases, doctors may prescribe medications to reduce inflammation and swelling, alongside pain relief and nerve-protective drugs. Moderate to severe cases may combine medication with physical therapy — including facial massage, muscle exercises, acupuncture, or structured rehabilitation programs.
Recovery timelines vary considerably. Some patients improve within one to two weeks, while others require extended treatment depending on the degree of nerve damage. In the most severe cases, surgery may be considered when other approaches have not produced results.
As a preventive measure, experts recommend redirecting air conditioner airflow away from the face, maintaining a comfortable room temperature, and limiting prolonged exposure to cold air during sleep.
No clinical studies or specific case figures are cited in the available expert guidance, leaving open questions about the precise frequency of AC-related facial nerve cases and which populations are most affected. Medical authorities have yet to issue formal public health guidelines specifically targeting air conditioner use and facial paralysis risk. As summer temperatures remain high, whether this advisory gains broader institutional backing — and whether further research quantifies the risk — remains to be seen.
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