The death of teenage voluntary worker Clare Morgan remains a mystery after an inquest heard no medical reason could be found.

The 19-year-old, whose short life was blighted by childhood sexual abuse and a rare illness called cerebella ataxia, which caused her to suffer involuntary muscle movements and shakiness, died alone in her flat in Allington Way, Chippenham, on January 6.

An inquest at Chippenham Magistrates Court yesterday heard that pathologist Dr Suzanne Armstrong could not ascertain the cause of death, though agreed it was possible Miss Morgan had died as a result of a fit.

Miss Morgan spent most of her childhood in care after she was sexually abused by a family member.

Her foster parent Monique Johnstone, from Corsham, said that three months before her death, Miss Morgan had alleged she had been raped.

In December Miss Morgan complained of nausea, head-aches, and blurred vision and sought medical advice on a number of occasions, including the day before her death.

The coroner found that Miss Morgan died of natural causes, and though the cause could not be ascertained suggested her cerebella ataxia may have led to a fatal fit.