Facial weakness

Also called: Bell palsy; facial nerve palsy

Relief and prevention Stretch Massage

Sudden one-sided facial weakness, usually from inflammation of the facial nerve. Most people recover substantially within months - and the first and most important job is to be sure it is not a stroke.

How common: Around 1 in 60 people over a lifetime; incidence 20-30 per 100,000 per year

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What it is

Bell's palsy is sudden weakness of one side of the face from inflammation of the facial nerve, probably viral in most cases. It comes on over hours to a couple of days and affects the whole side of the face including the forehead.

That last detail is the critical one. A stroke typically spares the forehead, because the upper face receives input from both sides of the brain. Facial weakness that spares the forehead, or that comes with weakness elsewhere, speech problems or other neurological symptoms, is a stroke until proven otherwise and is an emergency - the distinction cannot be made from a web page.

What it feels like

Sudden weakness or drooping of one side of the face, over hours to a couple of days
Inability to close the eye fully or raise the eyebrow on that side
Drooling, difficulty eating and slurred-sounding speech from the lip weakness
Sometimes pain behind the ear, altered taste and sound seeming loud on that side
The forehead affected, which is what distinguishes it from a stroke

What causes it

Most people have more than one of these at once, and they feed each other. Read the list looking for the two or three that sound like your week rather than for the one true answer — the ones that describe you are the ones worth acting on.

Inflammation of the facial nerve: The nerve swells within the narrow bony canal it passes through in the skull, compressing itself. That compression is what produces the weakness.
Viral reactivation: Herpes simplex virus reactivation is the most widely accepted cause. Other viruses, including varicella zoster, can also be responsible.
Ramsay Hunt syndrome: Facial palsy caused by varicella zoster reactivation, with a painful rash in or around the ear. It is more severe, recovers less completely, and needs antiviral treatment - so the rash matters.
Diabetes: Raises the risk of Bell's palsy and is associated with slower and less complete recovery.
Pregnancy: The risk is higher in pregnancy, particularly the third trimester and the first weeks after delivery.
Lyme disease: A recognised cause of facial palsy, particularly where it affects both sides, in areas where Lyme is endemic and after a tick bite.
Middle ear infection or surgery: The facial nerve passes through the middle ear. Infection, cholesteatoma or surgical injury can all affect it.
Tumours: A facial weakness that develops gradually over weeks rather than suddenly, or that does not recover, needs investigation for a tumour along the nerve's path.
Stroke - the emergency alternative: Not a cause of Bell's palsy but the reason speed matters. A stroke usually spares the forehead and comes with other symptoms, and it needs treatment within hours.
Delay in starting steroids: Not a cause, but a determinant of outcome. Corticosteroids started within seventy-two hours substantially improve the chance of complete recovery, which makes prompt medical contact important.

Who tends to get it

Anyone, at any age - it is common and mostly unpredictable
People with diabetes
Pregnant women, particularly in late pregnancy
Anyone with a recent tick bite in a Lyme-endemic area
People who have had it before, in whom recurrence is possible

What makes it worse, and what settles it

Makes it worse

Delay in seeking medical attention, since steroids work best within seventy-two hours
Failing to protect the eye, which cannot close and is at risk of drying and ulceration
Assuming any facial weakness is Bell's palsy without a proper assessment
Aggressive electrical stimulation, which has been associated with worse outcomes
Forceful facial exercises early on, which may contribute to abnormal recovery patterns

Settles it

Prompt medical assessment - both to exclude stroke and to start steroids within the effective window
Eye protection: lubricating drops, ointment at night and taping the eye closed if it will not shut
Gentle facial exercises and massage, guided by a therapist experienced in facial palsy
Facial neuromuscular retraining, which improves outcomes and reduces abnormal recovery patterns
Patience, since recovery is measured in weeks to months

What actually helps

The short version: Inflammation of the facial nerve producing one-sided facial weakness; most recover substantially within months

Strength work: Facial muscle retraining under guidance - NOT forced maximal effort, which encourages synkinesis

Stretching: Gentle facial stretch and relaxation work

Massage: Jaw & Face; Neck & Shoulders - light facial massage for comfort and circulation

Also worth doing: Eye protection while the eye will not close is the priority; mirror biofeedback retraining

What the evidence says: Tailored facial retraining with biofeedback improves outcome and reduces synkinesis. Vigorous maximal facial exercise makes synkinesis worse - the intensity matters in the opposite direction from most training.

The names above are the Targets qFIT tracks — the Muscle Guide explains what each one does, and Quick Add switches on the Exercises you already have.

No ready-made routine for this one yet

249 of the 267 problems here have a routine already built, and this is not one of them — usually because the work that helps is covered by a general routine rather than needing its own. What actually helps above names the muscles and the work involved, which is enough to put it together yourself.

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Get it checked if…

SUDDEN FACIAL DROOP MUST HAVE STROKE EXCLUDED IMMEDIATELY. Bell palsy affects the forehead too; a stroke usually spares it - but never make that call at home

And whatever the body part: chest pain or unusual breathlessness on exertion; a fever alongside the pain; unexplained weight loss; pain that is constant and unrelated to how you move; new numbness, weakness or loss of bladder or bowel control; or one calf that is swollen, warm and painful. Any of those, stop and get assessed.

How it usually goes

Most people with Bell's palsy recover substantially, with the majority making a complete or near-complete recovery over three to six months, and steroids started early improve those odds. Ramsay Hunt syndrome recovers less completely. Eye protection is the most important immediate practical measure. Facial weakness that spares the forehead, or comes with any other neurological symptom, is a stroke until proven otherwise and needs an emergency call, not an appointment.

Prevalence basis: Neurology epidemiology

This is general information, not a diagnosis, and it cannot examine you. If it matches you, use it to ask better questions of a clinician rather than to replace one.

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