Bell’s Palsy Symptoms: Early Warning Signs and How They Progress in the First 72 Hours

Bell’s palsy symptoms usually start suddenly and can be frightening. Knowing what they normally look like — and how they evolve — helps you act fast and tell the difference between “see a doctor today” and “call an ambulance now”.

Core symptoms of Bell’s palsy

Symptoms affect one side of the face and include:

• A drooping corner of the mouth, difficulty smiling, and water or saliva escaping from one side.
• Trouble closing the eye fully, with dryness or excess tearing.
• Inability to raise the eyebrow or wrinkle the forehead on the affected side.
• Loss of natural facial lines, such as the smile line between the nose and mouth.
• Difficulty puffing the cheeks, whistling or rinsing, and food collecting between cheek and teeth.

Associated symptoms many people miss

Because the facial nerve does more than move muscles, you may also notice:

Symptom	Why it happens
Pain behind or around the ear	Nerve inflammation where it exits the skull — may come first
Altered taste at the front of the tongue	The nerve carries taste from the front two-thirds of the tongue
Sensitivity to loud sounds	Weakness of a tiny middle-ear muscle that dampens sound
Dry eye or excess tears	Tear gland changes and weak blinking
Heaviness or numbness	A common feeling, even though facial sensation uses a different nerve

How symptoms progress in the first days

• First hours: pain behind the ear, a slightly odd smile, or trouble drinking.
• Within 48–72 hours: weakness increases and peaks — this is the golden window to start treatment.
• Weeks 1–2: symptoms stabilise; eye protection is the top priority.
• From week 3: most people begin to improve gradually. See Bell’s palsy recovery time.

If weakness keeps worsening after a week, develops slowly over weeks, or shows no improvement at all after 3 months, see your doctor for further tests.

Emergency signs: when to call an ambulance

Sudden facial weakness can sometimes be a stroke. Call emergency services immediately if facial weakness comes with:

• Weakness or numbness in an arm or leg.
• Slurred speech or difficulty understanding.
• Severe dizziness, loss of balance or a sudden severe headache.
• A normal forehead with weakness only around the mouth.

Remember F.A.S.T. — Face, Arms, Speech, Time. More in Bell’s palsy vs stroke.

Symptoms that point to another cause

• Painful blisters in the ear or mouth, with dizziness or hearing loss — possibly Ramsay Hunt syndrome.
• Ear discharge and fever — possibly a middle ear infection.
• Weakness on both sides or spreading through the body — needs urgent assessment.

What to do when symptoms appear

1. Rule out stroke first using the emergency signs above.
2. See a doctor within 72 hours — corticosteroids work best when started early. See our treatment guide.
3. Protect your eye — artificial tears by day, ointment and tape at night as advised. See eye care with facial palsy.
4. Don’t start forceful exercises on your own — avoid these common mistakes.

When your doctor agrees to start rehabilitation, Raq gives you a structured 3-month exercise plan, real-time AI guidance through your camera so every movement is done correctly, and reports to follow your progress week by week.