A trip to Disneyland Paris turned into a nightmare when a mother's whole body began shaking uncontrollably due to a rare tumour growing on the outside of her brain.
Nicola Davies, 45, from Merthyr Tydfil, south Wales, had been unknowingly living with the growth for around 10 years before symptoms started to show.
Ms Davies and her husband, Joe, a draftsman, were on holiday at the theme park with their son Morgan, 11, and daughter Millie, nine, when she was woken in the night by her left leg violently shaking.
She subsequently went to the doctors who were unable to diagnose Ms Davies, who suffered months of night-time shaking, headaches, deteriorating vision and hearing loss.
Yet, an eye test may have saved Ms Davies' life, as an optician noticed the tumour, known as meningioma, pressing on her optic nerve. Ms Davies later endured a seven-and-a-half hour operation that required she shave off her hair and left her with a prominent scar.
Ms Davies, a former kitchen assistant at a school, said: 'I am so grateful that the optician got to the bottom of it though, as if the tumour had kept growing, it could have eventually killed me.'
A mother's whole body began shaking uncontrollably due to a rare cone-shaped tumour
Nicola Davies, 45, (pictured with her husband and children) was on holiday at the time
Removing the tumour involved a seven-and-a-half hour operation that left a prominent scar
Meningioma is tumour of the tissues that protect the brain and spinal cord.
Around one in 38,000 people suffer.
Such tumours do not spread and are benign in 90 per cent of cases.
Yet, they can cause disability, be life-threatening and regrow.
Meningioma's cause is unknown, however, it has been linked to genetics and breast cancer.
A sufferer's senses, movement and ability to swallow may be affected.
Meningioma may also cause fits, muscle weakness and severe headaches.
Treatment options include surgery and radio- or chemotherapy.
Source: Meningioma UK
'I was waking up to find my whole body jolting'
Ms Davies said: 'I woke up at about 11.40pm and my left leg was shaking uncontrollably.
'I called my husband and woke him up, but it stopped as quickly as it had started. I thought it was just all the walking and excitement.'
Ms Davies thought nothing more of the incident until it happened again approximately three months later.
She said: 'I didn't know what it was. I was going to bed and waking up to find my whole body jolting.
'Joe told me I needed to go to the doctors and I made an appointment, but they couldn't find out what was wrong. I had blood tests, but they said it could be anything.
'It kept happening to me when I was relaxed. I would be woken up by the shaking, which would start in my left toe and spread up my leg.'
For months, Ms Davies went back and forth to the doctor, complaining about night-time shaking, headaches, deteriorating vision and hearing loss, but the cause remained a mystery.
Ms Davies said: 'I knew there was something wrong