Symptoms & what helps

Very common Fatigue that sleep doesn't fix

What it feels like

Not ordinary tiredness. It arrives suddenly and completely, like a fuse blowing. Thinking becomes wading through mud, words stop arriving, and every other symptom gets louder at once.

It can also arrive late, doing a lot on Monday can flatten you on Wednesday, which makes the cause very hard to spot.

Not ordinary tiredness. It arrives suddenly, like a fuse blowing.

It also arrives late. Monday's activity can flatten you on Wednesday.

It isn't steady, either. Fatigue comes in waves rather than a straight line, so the same task can be manageable one day and impossible the next.

What helps

Pace, don't push. Plan the day against a fixed energy budget, and spend it deliberately rather than until it runs out.
Rest before you need it, not after you crash.
Actually rest. Doom scrolling on socials isn't rest for your brain, do something that actually relaxes you. That could be putting on some relaxing music in the garden or a park, going for a walk, painting, or just kicking back and closing your eyes.
Chunk big activities with breaks between, even when you feel fine. You can use our Pacing Timer tool to help remember to take breaks.
Guard your best hours for the demanding things, and learn which activities are your personal triggers.
Keep moving, gently. Low-impact activity (a short walk, gentle yoga, stretching) is often energising rather than draining, and lifts mood too. Build up slowly, and stop before you're tired.
Learn your early warning signs. Most people have subtle tells before a crash: a particular headache, words going, sounds getting sharper, rereading the same line. Spotting yours buys you the chance to stop in time.
Write down what you did and how you felt for a fortnight. Because fatigue lands one to three days late, the pattern is almost impossible to spot from memory.
Be kind to yourself about it. Fatigue behaves like weather, it varies day to day and doesn't respond to trying harder. A bad day isn't a failure of effort.

What others can do

Believe it, even when they look completely fine.
Build breaks into plans by default.
Make leaving early an agreed plan, not a failure.
Take on the small logistics: driving, booking, remembering details.

Very common Memory problems

What it feels like

Some people can lose whole sections of their past, but for many, old memories aren't the ones that are lost, it's forming new ones. Names evaporate. You walk into a room with no idea why. Something is agreed and gone an hour later.

That last one is particularly hard, because it can look like you weren't listening or don't care.

Old memories usually stay. It's new ones that don't stick.

Something agreed can be genuinely gone an hour later.

What helps

One place for notes. A notebook, or one app on your phone. Not four places.
Write it down in the moment. Later doesn't exist.
Same place, every time for keys, glasses, wallet, phone.
Alarms for everything, including what you're sure you'll remember.
Build routines. Done the same way daily, they eventually run themselves.
Photograph things: where you parked, the meter, the shelf.

What others can do

Never say "I already told you." Just tell them again.
Follow important conversations up with a text.
Offer a cue, not a test: "we talked about Tuesday" beats "do you remember?"

Very common Concentration & attention

What it feels like

Holding a thought becomes work. A background conversation or someone walking past knocks you clean off a task. Following a film or a group conversation gets hard, because by the time you've processed one part the next has gone.

What helps

One thing at a time. Multitasking now costs more than working in sequence.
Cut the background: TV off, door shut, headphones on.
Short blocks with real breaks: the pacing timer handles this.
Clear the space in front of you before starting.
Ask people to speak one at a time. It's a reasonable request.
Use subtitles. Two channels of input make one easier.

What others can do

Get their attention before you start speaking.
Pause when interrupted rather than talking over the top.
Choose quiet places: corner tables, off-peak, home rather than a busy pub.
Don't take a lost thread personally.

Sensory overload: light, noise, crowds

What it feels like

The filter that kept the world in the background is gone. Supermarket lighting is physically painful. Several conversations become one unbearable wall of noise. Screens and busy patterns can trigger nausea.

It builds, and once it tips over, thinking, speaking and emotional control all go at once. Many people say it's the symptom that most quietly shrinks their world.

The filter that kept the world in the background is gone.

It builds. Once it tips over, thinking and speaking go at once.

What helps

Leave before the tipping point. Recovering from overload takes far longer than avoiding it.
Carry your kit: sunglasses, a cap, filtered earplugs or noise-cancelling headphones.
Tame screens: lower brightness, warmer colour, bigger text. This page has a Warm colour setting in the top bar.
Go at quiet times. Many supermarkets run a weekly quiet hour.
Plan your exit in advance, so leaving isn't a decision made while overloaded.
Have a reset routine: the overload reset walks through one.

What others can do

Treat "I need to go" as information, not rejection, and go without discussion.
Pick the quiet table. Turn the music down without being asked.
Understand they may need hours of silence afterwards. That silence isn't sulking.

Emotional changes, irritability & low mood

What it feels like

Feelings arrive faster and larger, and the brake between feeling and reacting is weaker. Small frustrations produce disproportionate anger, and you can watch it happening without stopping it.

Some people cry or laugh at things that don't warrant it, that particular symptom is neurological rather than emotional. Low mood and anxiety are extremely common.

What helps

Notice the fuel. Irritability is usually fatigue, overload, pain or hunger in disguise.
Agree a pause signal meaning "I need ten minutes", used with no argument and no follow-up questions.
Leave the room. Removing yourself early is a skill, not a failure.
Slow breathing genuinely works: the breathing pacer will time it.
Ask about a neuropsychologist. Therapy adapted for brain injury is considerably more useful here.
Tell your doctor about low mood. Treating it improves fatigue and thinking too.

What others can do

Don't argue during an episode: nothing lands. Go quiet, lower the stimulation, wait.
Come back to it later, calmly, if it needs discussing.
Separate the person from the symptom out loud. "That was the injury talking" repairs a lot.
Get your own support. Living with this is genuinely hard.

Headaches & pain

What it feels like

One of the most common lasting effects. It may be pressure, band-like tightness, migraine with light and sound sensitivity, or pain referred from the neck, whiplash and head injury very often happen together.

What helps

Get them properly assessed. Different headache types need different treatment, and post-traumatic headache is often under-treated.
Watch painkiller frequency. Taking them on more days than not can cause medication-overuse headache, which feels like the original problem worsening. Ask a pharmacist or GP.
Ask about your neck. Neck-driven headaches respond very well to physiotherapy.
Manage screens: brightness down, text bigger, regular breaks.
Keep a simple diary of headache, sleep and what you'd done beforehand. A pattern on paper is far more useful to a doctor than "it's been bad lately".

Quiet basics that help

Regular meals and steady hydration.
Consistent sleep and wake times.
Looking at something distant every so often when on screens.

Sleep problems

What it feels like

Brain injury commonly disrupts the systems controlling sleep. People sleep enormous amounts and wake unrefreshed, or can't fall asleep despite total exhaustion, or wake repeatedly. Days and nights can drift out of alignment entirely.

What helps

Fix your wake time first, even after a poor night. It anchors everything else.
Get daylight early: ten to twenty minutes outdoors does more for the body clock than most things.
Keep naps early and short. Resting without sleeping still helps.
Same wind-down every night: dim light, no screens for an hour, cool dark room.

Worth pushing for

Sleep problems after brain injury are treatable, and often overlooked.
Improving sleep improves fatigue, mood, memory and pain together, it's the highest-value thing to fix.

Word-finding & communication

What it feels like

The word is right there and won't come. You substitute the wrong one, or lose the thread mid-sentence. Following a fast group conversation is like trying to catch something already past.

It's exhausting and quietly humiliating, and worst exactly when you're tired or under pressure.

What helps

Pause openly. "Give me a second, it's coming" beats rushing and losing it.
Describe around it. "The thing you boil water in" keeps things moving.
Ask for a moment before replying. Silence is allowed.
Prepare for known conversations: note the two or three points beforehand.
Ask about a speech and language therapist. This is precisely their expertise.

What others can do

Don't finish their sentences unless asked.
Leave gaps. Slow down. Let a pause sit.
One question at a time, and give the answer time to arrive.

Planning, starting & finishing things

What it feels like

Often called executive function. You know what needs doing and cannot make the start happen. Tasks with several steps become impossible to sequence. You begin three things and finish none.

From outside this looks like procrastination. From inside it feels like a jammed switch.

What helps

Break it down until the steps feel silly. Not "sort the paperwork" but "put the pile on the table".
Only look at the next step, never the whole list.
Set a start time, not a deadline. Starting is the broken part.
Commit to five minutes only. Starting is usually the whole battle.
Write checklists for anything repeated, then follow the checklist instead of your judgement.
Body-double. Someone quietly present, even on a video call, makes starting far easier.

What others can do

Help break the task down rather than taking it over.
Offer one prompt, not a list of instructions.
Read "I can't start" as literal, not as an excuse.

Dizziness & balance

What it feels like

Rooms start to tilt and spin when you turn your head, look up, or when getting in or out of bed. Standing brings a swimming sensation. Busy visual environments (supermarket aisles, patterned carpets, traffic, scrolling screens) trigger nausea and unsteadiness.

What helps

Get it assessed. Much post-injury dizziness is treatable, and vestibular physiotherapy is often very effective.
Ask about your vision too. Eye-tracking and focusing problems are common after head injury and frequently missed.
Move deliberately: turn your whole body rather than just your head, and rise in stages.
Fix a point on the horizon when things swim.

Around the house

Clear floors and good lighting.
Non-slip mats, and something to hold near stairs.
Don't rearrange furniture without saying.

Vision & visual processing

What it feels like

Text swims or doubles. Your eyes tire within minutes of reading. You lose your place on the line, or find you've read the same paragraph three times without taking it in.

Standard eye tests often come back normal, because the problem is usually in how the eyes work together and how the brain processes what they send, not in the sharpness of your sight.

What helps

Ask about a behavioural or neuro-optometrist. They assess eye teaming, tracking and focusing, which routine sight tests don't cover.
Increase text size well beyond what looks normal. The top bar on this site does it in one tap.
Use a ruler or your finger to hold your place on the line.
Try the focus reader for anything long, it shows a few words at a time with nothing around them.
Reduce glare: matte screens, indirect lighting, and warmer screen colours.

What others can do

Send things in large, plain text rather than dense PDFs or scans.
Read forms and letters aloud rather than handing them over.
Don't assume reading difficulty means they haven't understood.

Changed personality & motivation

What it feels like

The hardest one to talk about. Injury to the frontal areas can change how someone acts: speaking without the usual filter, losing motivation entirely, or seeming flat about things they once loved.

Two things matter. Loss of drive is a symptom, not laziness, the brain's initiation system is damaged. And people often have limited insight into these changes, which is itself part of the injury rather than denial.

What helps

External structure does the work internal motivation used to: routines, alarms, prompts, standing arrangements.
Pre-commit on big decisions. Agree that anything over a set amount waits 48 hours and involves one other person.
Neuropsychology helps a great deal here, for the person and the family together.
Name the pattern, not the person. "The impulse thing is happening" is easier to hear and to act on.

What others can do

Prompt gently and consistently rather than waiting for them to initiate.
Set up practical safeguards early, agreed while things are calm.
Get support for yourself. Personality change is a genuine loss, and grieving it doesn't make you disloyal.

Impulse control

What it feels like

The gap between having a thought and acting on it gets very short, or disappears. The words are already out. The thing is already bought. You knew it was a bad idea, but you knew it slightly too late.

It shows up in different ways for different people: spending money you do not have, saying the blunt thing out loud, eating or drinking past the point you meant to stop, snapping at someone, or starting something you cannot then leave alone.

The part of the brain that pauses and asks "should I?" is doing less than it used to. That is a mechanical change, not a change in what you value. Most people can still tell you afterwards exactly why it was a bad idea, which is often the most frustrating part.

Impulses are usually far stronger when you are tired, overloaded or upset. If a bad decision tends to arrive at the end of a long day, that is not a coincidence.

What helps

Put time between the urge and the action. A flat rule works better than judging each case: nothing over a set amount gets bought the same day.
Add friction to the things that catch you out. Remove saved cards from shops and phones, log out of apps, take the app off the home screen.
Decide once, while calm, rather than deciding again every time. The decision you make on a good day is the one worth keeping.
Use the bank's own tools. Most banking apps can set spending limits, freeze card types, or require a second step for larger payments.
Draft, then send later. For messages and emails, write it, close the app, and look again in the morning.
Agree a second pair of eyes for anything big, with someone you trust. Not permission, just a pause.
Watch the tiredness, since managing fatigue often does more for impulse control than trying harder does. The pacing timer is built for this.

What others can do

Set the safeguards up together, early, while things are calm. Imposing them afterwards feels like punishment and rarely holds.
Name the pattern, not the person. "That sounds like a tired decision" lands very differently from "you have done it again".
Do not replay it repeatedly. They almost certainly already know, and going over it again does not restore the pause that was missing at the time.
If money is the recurring problem, a neuropsychologist or a brain injury caseworker can help set up protections that do not feel like being treated as a child.

Symptoms & what helps

Is a symptom missing?