Cold Sore Virus Causes Severe Brain Damage in UK Woman

A 74-year-old woman from Penrhyn-coch near Aberystwyth, Ceredigion, has suffered severe brain damage caused by the herpes simplex virus type 1 (HSV-1), commonly known as the cold sore virus.

The virus led to encephalitis, a serious inflammation of the brain.

Helen Edwards initially experienced flu-like symptoms but was later diagnosed with encephalitis after spending 12 weeks in hospital.

The condition caused significant cognitive impairment, including an inability to form new memories and difficulty navigating familiar spaces.

Encephalitis affects an estimated 6,000 people annually in the UK and can be fatal in one in five cases.

Despite its severity, awareness of encephalitis remains low, with surveys indicating that 77% of people do not know what the condition is.

HSV-1 is widespread globally, affecting approximately 3.8 billion people under 50, but it rarely causes encephalitis.

The virus is primarily transmitted through close skin-to-skin contact, such as kissing or sharing items contaminated with saliva.

Helen Edwards had no prior symptoms of cold sores and was described by her daughter as "really lively and fit" before falling ill.

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