A heavy metal fan has been found to have bleeding in the brain a month after a night of headbanging at a Motorhead concert in Paris.

German doctors who diagnosed the 50-year-old man's bleed say the case is "evidence of Motorhead's reputation as one of the most hardcore rock'n'roll acts on earth" - but also serves as a health warning against headbanging.

After the concert, in January 2013, the fan had constantly worsening headaches.

Neurosurgeons at Hanover Medical School found a small area of bleeding on the right side of his brain, called a chronic subdural haematoma, where blood gathers under the outer membrane of the brain.