Travel warnings are being issued over 18 medical conditions that could see you banned from flying. While usual and obvious sickness could stop you from boarding, some lesser known reasons could also see a change to your plans.
The World Health Organization states: "Airlines have the right to refuse to carry passengers with conditions that may worsen, or have serious consequences, during the flight.
"They may require medical clearance from their doctor if there is an indication that a passenger could be suffering from any disease or physical or mental condition that could be a hazard to the safety of the aircraft, reduce the welfare and comfort of the other passengers and crew members, require medical attention during the flight, or may be aggravated by the flight.
