My throat itches as soon as I lie down.

Generally, experiencing an itchy throat upon lying down may be caused by allergies, upper respiratory tract infections, chronic pharyngitis, or other reasons. A detailed analysis is as follows:

1. Allergies

When patients are allergic to airborne substances, house dust mites, or bedding materials, they may experience an itchy throat upon lying down. It is recommended that patients take medications such as compound guaifenesin potassium sulfonate oral solution or dextromethorphan sustained-release suspension under medical guidance for active treatment.

2. Upper Respiratory Tract Infection

After an upper respiratory tract infection, most people experience throat itching due to viruses damaging the mucous membranes of the throat. It is recommended to take medications such as pentoxyverine hydrochloride syrup, Keké Capsules (Ke Ke Jiaonang), or Chuanbei cough syrup under medical supervision.

3. Chronic Pharyngitis

In patients with chronic pharyngitis, postnasal drip of secretions adhering to the posterior pharyngeal wall often irritates the throat area, causing dryness and itchiness when lying down. Patients may use compound chlorhexidine mouthwash or compound borax mouthwash to rinse repeatedly under a doctor's guidance.

Besides the three causes mentioned above, other conditions such as cough variant asthma, gastroesophageal reflux disease (GERD), or postnasal drip syndrome may also lead to this symptom. It is advisable to seek timely medical evaluation at a hospital to identify the underlying cause and follow appropriate treatments as directed by a physician.