Brain tumour symptoms can vary widely depending on the type, size and location of the tumour. Common signs can include headaches, seizures, changes to speech or vision, memory problems, weakness, nausea and difficulties with balance or coordination. Some symptoms develop gradually, while others may appear more suddenly.
Recognising the signs early can lead to faster diagnosis and better outcomes, here’s what to look out for...
Brain tumours can be difficult to diagnose in their early stages because the signs often mimic more common conditions like migraines, anxiety, or fatigue. However, recognising the early symptoms of a brain tumour could lead to faster diagnosis, better treatment options, and improved outcomes.
In this guide, we’ll outline 10 common warning signs to be aware of, and why it’s important to trust your instincts when something feels off.
At a glance
Brain tumour symptoms can vary from person to person, but some of the most common signs include headaches, seizures, speech or vision changes, memory problems, weakness, nausea, and difficulties with balance or coordination. These symptoms can have many other causes, but if they are new, persistent, worsening, or happening together, they should be checked by a medical professional.
If you’re experiencing frequent or worsening headaches, especially in the morning or when lying down, it may be a sign of increased pressure in the brain. Not all headaches are serious, but sudden or new patterns of pain should be discussed with your GP.
Seizures are a common symptom of brain tumours, even in people with no history of epilepsy. If you or someone you know experiences a seizure, it’s essential to seek urgent medical attention.
Blurred or double vision, loss of peripheral vision, or unexpected vision issues can occur depending on where the tumour is located in the brain.
Short-term memory issues, forgetfulness, or trouble concentrating can be signs of neurological disruption. These are often dismissed as stress-related, but persistent changes should be assessed.
Gradual or sudden hearing loss in one ear, or persistent ringing (tinnitus), may be associated with tumours affecting the auditory nerves.
Struggling to speak clearly, slurring words, or having trouble naming everyday objects may point to a tumour in the areas responsible for language.
Tumours can affect how the brain controls movement. Sudden weakness, tingling, or numbness in the arms or legs, especially on one side, should never be ignored.
Nausea not related to food poisoning or illness, particularly when combined with other neurological symptoms, can be an early red flag.
Unexplained clumsiness, difficulty walking, or frequent stumbling can indicate a problem in the cerebellum, the brain area that controls balance.
Subtle or sudden changes in mood, motivation, or personality can occur when tumours impact certain areas of the brain. If loved ones notice unusual changes, take it seriously.
Still unsure? Check the NHS guide on symptoms of a malignant brain tumour (brain cancer)
Spotting brain tumour symptoms early could save a life, understanding what to look for is the first step.
Brain tumour symptoms can start gradually or appear more suddenly, depending on the tumour’s size, location and how it is affecting the brain. Some people may first notice headaches, speech or vision changes, memory problems, seizures, weakness, or difficulties with balance and coordination, while others experience subtler changes that become more noticeable over time.
Because brain tumours are rare, these signs are often misattributed to less serious conditions. But spotting the early symptoms of a brain tumour and seeking help can make all the difference.
Your GP may recommend further investigations like an MRI or refer you to a neurologist if they suspect anything abnormal.
Read more in our guide; How Brain Tumour symptoms can start and why they are sometimes missed
Understanding Headaches and Brain Tumour Symptoms
No. Headaches are common and can have many different causes, so having a headache does not mean you have a brain tumour. However, headaches can be one of the possible brain tumour symptoms, particularly when they feel different from your usual headaches, become more frequent, or gradually get worse.
The NHS lists headaches among the common symptoms of a brain tumour, alongside seizures, nausea, memory or personality changes, weakness, and vision or speech problems. It also advises speaking to a GP if you develop these kinds of symptoms, especially if a headache feels different from the type you normally experience or is becoming worse over time.
For trusted medical guidance, read the NHS information on brain tumours. If you are concerned about persistent or unusual headaches, speak to your GP or clinical team rather than trying to diagnose the cause yourself.
Brain tumour symptoms and locations
The frontal lobe plays an important role in movement, behaviour, decision-making, concentration and speech. A tumour affecting this area may cause weakness on one side of the body, changes in personality or behaviour, difficulty concentrating, or problems producing speech and finding the right words.
If communication changes are a concern, our guide to brain tumour speech problems explains how different areas of the brain can affect speech and language.
The temporal lobe is closely involved in memory, language and understanding sounds. Tumours affecting this area may cause memory problems, difficulty understanding or using language, confusion, or changes in how someone processes information.
These symptoms can sometimes be subtle at first, particularly when memory or concentration changes are put down to tiredness, stress or everyday life.
The occipital lobe is primarily responsible for processing vision. A tumour affecting this part of the brain may cause blurred or double vision, loss of part of the visual field, or difficulty recognising what someone is seeing.
New or unexplained changes to vision should always be discussed with a medical professional.
The cerebellum helps control balance, coordination and precise movement. A tumour affecting this area may cause problems with walking, feeling unsteady, poor coordination, dizziness or difficulty controlling movements.
Because brain tumour symptoms can depend so heavily on location, understanding the different brain tumour types and areas of the brain involved can help make sense of why symptoms vary from person to person.
Knowing when to speak to a doctor about possible brain tumour symptoms can lead to earlier diagnosis and better treatment options.
If you experience one or more of these symptoms regularly or notice them worsening, book an appointment with your doctor.
Early intervention saves lives.
What Happens Next?
If a GP thinks your symptoms could be linked to a brain tumour, they will usually start by asking more about the changes you have noticed, when they began, and whether they are getting worse. They may also carry out a neurological examination, which can include checking your reflexes, balance, memory, hearing, eyesight, strength or sensation.
Depending on your symptoms and the results of the examination, your GP may refer you for further tests or to a specialist. This can include an MRI or CT scan of the brain, and some people may be referred to a neurologist or neurosurgeon for further assessment.
Being referred for tests does not mean you definitely have a brain tumour. The purpose is to understand what is causing your symptoms and decide whether any further investigation or treatment is needed.
If your symptoms continue, change or get worse while you are waiting, contact your GP again rather than waiting for a planned appointment. We also offer help and advice and welcome anyone looking for support to get in touch.
At The Three Tumours, we provide support, education, and connection for people living with all types of brain tumours. Whether you are newly diagnosed, living with long-term effects, or supporting a loved one, we are here to help. Learn more about symptoms, coping strategies, and our support services here:
Recognising the early symptoms of a brain tumour can be life-saving, but it starts with knowing what to look for and acting on it. If something doesn’t feel right, trust your instincts and speak to a medical professional. At The Three Tumours, we’re here to support you with information, guidance, and a community that understands. Raising awareness is the first step towards earlier diagnosis, better outcomes, and hope for everyone affected.
Start here: quick, helpful answers from our brain tumour charity.
If you still have questions, please do get in touch.
Early symptoms of a brain tumour can include headaches, speech changes, vision problems, weakness, balance issues, memory changes, seizures, or unusual changes in behaviour or concentration. Symptoms can vary depending on the tumour’s size, type and location in the brain.
No. Although headaches can be a warning sign, some people first notice speech problems, vision changes, movement difficulties, seizures, or changes in memory and concentration. This is one reason brain tumour symptoms can sometimes be missed at first.
Yes. A brain tumour can affect speech and movement depending on where it is located in the brain. Some people may notice word-finding problems, slurred speech, weakness, balance issues, or difficulty coordinating movement.
You should seek medical advice if symptoms are new, unusual, getting worse, happening more than once, or affecting speech, movement, memory or vision. If something does not feel right, it is always safer to get it checked.
No. Brain tumour symptoms can start gradually or suddenly, depending on the tumour and the area of the brain affected. Some warning signs may come and go at first, while others become more noticeable over time.
No. Many early symptoms can have other causes. However, persistent or worsening symptoms should not be ignored, especially when several changes are happening together.
Yes, some brain tumour symptoms can come and go, especially in the earlier stages or when they are affected by factors such as fatigue, stress or the area of the brain involved. However, symptoms that are new, recurring, becoming more frequent, or getting worse over time should always be discussed with a GP or clinical team.
Medical information sources: NHS UK guidance.
Last reviewed: August 2026.
