As a crowd of some 50,000 people thronged the Granaries on Wednesday for the Isle of MTV festival, a total of 105 youngsters had their fun somewhat dampened after having had to be treated for alcohol intoxication and dehydration.Six of these, aged between 15 and 20, required further treatment in hospital.

A member of the audience noticed a “steady stream” of casualties being taken to the medical posts set up at the Granaries.

The most common medical problems were alcohol intoxication, exhaustion and dehydration as well as minor trauma.

A spokesman for St John Ambulance explained that dehydration was a common ailment among foreigners who were not used to the heat.

The concert kicked off at 7pm but a number of keen fans queued for hours outside the barriers in the scorching sun to position themselves in a prime spot right beneath the stage.

Excessive alcohol consumption also causes dehydration, as well as dizziness, nausea, vomiting, slurred speech, slower reflexes, aggressiveness and bad judgement.

A spokeswoman from the Health Ministry explained that there were three advanced medical posts with a total capacity of 40 patients at any point in time. They were equipped with advanced life support levels.

The scale of the event meant that seven emergency physicians, 10 nurses and 70 first aid personnel were deployed. There were also nine advanced life support ambulances, one major incident support unit and two rapid intervention units.

“Although the number of patients might appear high, it adds up to 0.21 per cent of the whole concert crowd,” the spokeswoman added.

“Therefore according to UK standards, it is considered to be a low casualty rate event (less than one per cent attendance).”