⚠️ Critical: Xiao Liang's case highlights that cerebrovascular issues can present subtly. One-sided drooling + headache/dizziness warrants urgent evaluation.
5. Sleep Apnea
What it is: Repeated breathing interruptions during sleep
Why it causes drooling: Mouth breathing to compensate for blocked airways + relaxed throat muscles
Other symptoms:
→ Loud snoring, gasping during sleep
→ Daytime fatigue despite "enough" sleep
→ Morning headaches
→ Difficulty concentrating
Action: A sleep study can diagnose apnea; treatment (CPAP, oral devices) often reduces drooling.
6. Infections (Tonsillitis, Mononucleosis, Sinusitis)
What it is: Viral or bacterial infections affecting the throat, tonsils, or sinuses
Why it causes drooling: Swelling/pain makes swallowing difficult; congestion forces mouth breathing
Other symptoms:
→ Sore throat, fever, swollen lymph nodes
→ Nasal discharge, facial pressure
→ Fatigue, body aches
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