How long does Bell's palsy last on average?

Most people begin to see some movement return within two to three weeks of onset, and around 70% recover completely within three to six months without any lasting effects. With prompt steroid treatment that figure rises to roughly 85%. A minority take up to a year, and a small number are left with some permanent weakness or synkinesis.

Is it normal for Bell's palsy to last more than 6 months?

It is less common, but it is not rare, and it does not mean something has gone wrong. If you have seen no movement at all by three months, that is a good point to ask for a referral to a facial nerve specialist or a facial therapist, because recovery beyond that stage tends to benefit from active retraining rather than time alone. Slow improvement can genuinely continue past six months. Nerve regrowth is simply very slow.

What is the fastest way to recover from Bell's palsy?

There is no way to speed up nerve regrowth itself. It happens at roughly 1mm per day whatever you do, and that is not something you can influence by trying harder. What you can influence is the starting conditions. Steroids taken within 72 hours of onset measurably improve outcomes, and protecting your eye prevents the one complication that causes lasting damage. After that, gentle, staged facial retraining helps you recover well rather than quickly.

Can Bell's palsy come back?

Sometimes. Recurrence happens in a small percentage of people, occasionally on the opposite side. If it does happen again, treat it as urgently as the first time, because the 72-hour window still applies. It is also worth asking for a fuller look, since repeat episodes can occasionally point to an underlying cause other than idiopathic Bell's palsy.

What is Stage 4 Bell's palsy?

There is no Stage 4, because Bell's palsy has no stages. You have almost certainly seen House-Brackmann Grade IV, which is a severity score rather than a stage on a ladder. Grade IV means obvious weakness with an eye that does not close fully. It is serious, but it is not a prognosis, and nothing is progressing toward a Stage 5 because there is not one.

What causes Bell's palsy to flare up?

Bell's palsy is not usually a condition that flares in the way asthma or eczema does. It is a single episode of nerve inflammation that peaks within about 72 hours and then improves. A small percentage of people do have a recurrence, sometimes years later, which is a fresh episode rather than a flare. If your weakness is genuinely fluctuating day to day, that is unusual for Bell's palsy and worth mentioning to your doctor.

What not to do when you have Bell's palsy?

The three that genuinely matter: do not leave your eye unprotected, especially overnight, because that is the one thing that can cause permanent damage. Do not wait past 72 hours to be seen, because that is the steroid window. And do not force big, strenuous facial movements early on, which achieves nothing while the nerve is not conducting and may encourage synkinesis later. Most other advice you will read is far less important than these three.

How Long Does Bell's Palsy Last? A Week-by-Week Timeline

The honest answer is three to six months for most people, and the first flicker of movement usually arrives somewhere around week three.

But “three to six months” is a hard thing to hear on day four, when nothing has moved and every hour feels like proof that it never will. If that is where you are right now, please know that the stillness you are looking at today tells you very little about how this ends.

Here is the actual shape of it. What happens when, what it means, and which parts genuinely predict how this goes for you.

The short answer

Around 70% of people with untreated Bell’s palsy recover completely.
Around 85% recover completely when steroids are started within 72 hours.
Week 2 to 3 is when most people notice their first returning movement.
3 to 6 months is the typical window for full recovery.
The best predictor is how early movement starts coming back. An early return strongly suggests a complete result.

That last point matters more than anything else on this page. If you are seeing even a twitch by week three, the odds are very much on your side.

Week by week

Week 1: the hardest part

Weakness usually peaks within 48 to 72 hours of onset. This is worth saying clearly, because it frightens people badly: getting worse over the first two or three days is expected. It is not a sign that treatment has failed, and it is not a sign that you are one of the unlucky ones. It is the nerve swelling to its maximum inside a narrow channel of bone.

This week comes down to two things.

Steroids, urgently. Prednisolone started within 72 hours meaningfully improves your chance of a complete recovery. This is the one genuinely time-critical decision in the whole condition, and the window closes quickly.
Protecting your eye. If your eye will not close fully, it cannot look after itself. Drops through the day, ointment and taping at night, starting the very first night. This is the only part of Bell’s palsy that regularly causes lasting damage, and it is almost entirely preventable.

Weeks 2 to 3: the first sign

Somewhere in here, most people get something. It is rarely dramatic. A faint twitch at the corner of the mouth. A slightly stronger blink. A sense that your cheek belongs to you again.

People miss it all the time, because you are watching the mirror for your smile, and what tends to come back first is tone. The resting droop lifts a little before any movement you can control shows up.

This is the most telling moment of your recovery. Movement returning inside three weeks points strongly toward a full result within a few months.

Weeks 3 to 8: slow, quiet progress

The nerve regrows at roughly 1mm per day. From the point of injury to your facial muscles is several centimetres. Do that arithmetic and the timeline stops feeling arbitrary or unfair. It is a distance problem, and there is no shortcut anyone could give you.

The hard part of this phase is that progress is real but invisible day to day. You cannot see 1mm. You can only see it across weeks, which is exactly why so many people here become convinced they have stopped improving when they have not.

If you take nothing else from this section: feeling stuck is not evidence of being stuck. This stretch is where a record helps, because memory is a poor instrument for measuring gradual change, and it is very hard to keep faith in progress you cannot see.

Months 3 to 6: things settle

Most people who are going to recover fully have done so by now. Movement becomes coordinated again, the asymmetry at rest fades, and your face starts behaving like yours.

For some people, this is also when something new shows up.

Months 3 and beyond: synkinesis, if it comes

As nerve fibres regrow, some find their way back to the wrong muscle. The signal you send to your smile also arrives at your eye, so your eye narrows when you smile, or your cheek tightens when you blink. This is synkinesis, and it is a complication of recovery rather than of the original injury.

It usually appears between months three and six, often just as people feel they are through the worst of it, which is a genuinely disheartening piece of timing. The good news is that it responds to specific retraining rather than to waiting. It is also one of the strongest reasons to keep facial exercises gentle and controlled rather than forcing big movements early.

What predicts a longer recovery

Some of these you can influence. Most you cannot, and none of them are your fault.

Factor	Effect on outcome
Complete paralysis at onset	Slower and less certain than partial weakness
No movement by 3 weeks	Longer road, worth a specialist referral
Steroids started after 72 hours	Loses most of the treatment benefit
Age over 60	Somewhat slower recovery on average
Diabetes or high blood pressure	Associated with slower recovery
Severe ear pain at onset	May suggest Ramsay Hunt rather than Bell’s palsy

That last row is worth pausing on. If you had significant ear pain, or a rash near or inside your ear, that can point toward Ramsay Hunt syndrome, which is shingles affecting the facial nerve. It needs different treatment (antivirals matter much more) and has a tougher outlook, and it is mistaken for Bell’s palsy often enough to be worth raising with your doctor directly.

When to ask for more help

Please ask for a referral to a facial nerve specialist or a facial therapist if:

You have seen no movement at all by three months.
You are developing synkinesis, where your eye narrows as you smile.
Your eye is red, painful, or your vision has changed. Please treat this as same-day, not next week.
The weakness is getting worse after the first week, which is not the usual pattern and deserves another look.

Asking is not making a fuss. You are allowed to want answers about your own face.

The part that isn’t in the timeline

Every chart on this page measures nerves. None of them measures what it is like to avoid photographs for four months, or to hear yourself explain your own face to a stranger, or to catch your reflection and feel a small drop of grief.

That part has its own timeline, and it does not follow the neurological one. People whose faces recovered fully by month four sometimes take much longer to stop flinching at cameras. That is not vanity, and it is not weakness. Your face is how the world reads you and how you recognise yourself, so losing control of it is a genuine loss, and it deserves to be treated like one.

If that is where you are, the emotional side of Bell’s palsy is written for exactly that.

Sources

This article reflects the consensus reported by the NHS, Mayo Clinic, and Cochrane’s reviews of corticosteroid treatment for Bell’s palsy. It is educational and is not a substitute for advice about your own case. It is scheduled for clinical review.