Jade McMaster, 31, from Glasgow, had a full seizure on a petrol forecourt in October 2017 and was diagnosed with a brain tumour on her left temporal lobe.
She had previously put symptoms of migraines and light sensitivity down to her lifestyle.
Five years later, Ms McMaster says more people need to be aware of the symptoms.
“I could have so easily had that seizure when driving, which is a scary thought,” she said.
“I knew absolutely nothing about brain tumours ahead of my own diagnosis. If I had then I would have been more informed about what it all meant and I would have requested a scan.
“Maybe then the way in which my brain tumour was discovered would have been less dramatic too,” Ms McMaster added.
Doctors believe the tumour may have been growing for a significant amount of time, putting pressure on her brain and triggering the first seizure.
“I should have seen my GP sooner – I know that,” she said.
“That’s why I would encourage anyone with any concerning symptoms, or a combination of symptoms, to see their doctor as soon as possible.
“I thought that I just had headaches until I experienced what it could lead to.
“We take a painkiller and get on with the rest of our day. But people need to be aware when this could be a sign of something bigger, even if the chances are small.”
The Brain Tumour Charity say the number of people diagnosed with brain tumours has risen 30% in the last 20 years, according to data from Public Health Scotland.
During the Covid-19 pandemic, the number diagnosed dropped by 8%, prompting the charity to launch a campaign to raise awareness of common symptoms associated with brain tumours called “Better Safe than Tumour”.
“These worrying figures show just how urgently we need to act on this devastating and life-changing disease in Scotland,” said Dr David Jenkinson, the charity’s chief scientific officer.
He added: “While brain tumours remain relatively rare, incidence has continued to rise significantly over the last two decades, and this has unfortunately not yet been matched by the tangible progress in diagnosis, treatment and survival outcomes seen in many other cancers.”
The charity claims progress for brain tumours has continued to lag behind survival improvements seen in other diseases.
Just 12% of UK adults survive for five years after a brain tumour diagnosis, with the disease continuing to reduce life expectancy by 27 years on average — the highest of any cancer.
Dr Jenkinson added: “We absolutely want to reassure people that despite this increase in cases, brain tumours are still uncommon.
“But it’s so important that we see greater awareness of the signs and symptoms of the disease at the earliest opportunity.”
A Scottish Government spokesperson said: “With one-year survival ranging from around 20% to almost 100%, our current national cancer plan has taken actions to focus on the improved survival of those ‘less survivable cancers’, such as brain tumours.”