Constant phlegm or the feeling of mucus in the throat can have several causes. The right treatment depends on what’s causing it.
Common causes include:
- Allergic rhinitis: Allergies can cause postnasal drip, where mucus from the nose drains down the back of the throat.
- Common cold or other viral infections: Mucus production often increases during and shortly after an illness.
- Chronic sinusitis: Ongoing sinus inflammation can lead to frequent throat clearing and mucus.
- Gastroesophageal reflux disease or Laryngopharyngeal reflux: Stomach acid reaching the throat can cause irritation, a sensation of mucus, and frequent throat clearing.
- Smoking or exposure to irritants such as dust or air pollution.
- Dry air or dehydration, which can make mucus feel thicker.
What may help:
- Drink plenty of fluids to keep mucus thinner.
- Gargle with warm salt water if your throat feels irritated.
- Use a saline nasal spray or saline rinse if postnasal drip is contributing.
- Avoid smoking and limit exposure to irritants.
- If reflux seems to trigger symptoms, avoid large meals before bedtime, reduce foods that worsen your reflux, and elevate the head of your bed if symptoms occur at night.
You should see a healthcare professional if:
- Symptoms last more than 3–4 weeks.
- You cough up blood.
- You have persistent fever, unexplained weight loss, or severe pain.
- You have difficulty swallowing, persistent hoarseness, or shortness of breath.
If you tell me:
- How long you’ve had the mucus,
- Its color (clear, white, yellow, green, or bloody),
- Whether you have heartburn, nasal congestion, allergies, or a cough,
I can help narrow down the most likely cause and suggest appropriate next steps.
