'I walk into a room and people start coughing': Rare condition makes people allergic to sufferers

People Allergic To Me is a group of people with a condition so rare it does not have an official medical name.

People around them will cough, sneeze and rub their eyes if they are exposed to certain chemicals.

People with PATM give off higher levels of certain chemicals that are known to provoke respiratory symptoms in people exposed to them.

PATM sufferers who spoke to Sky News invariably said they had been told the condition was "all in their head" There is a recognised psychological condition that bears similarities to PATM called Olfactory Reference Disorder, or ORD .

People with ORD are preoccupied with their perceptions of what other people think about an imagined smell, while PATM patients perceive physical reactions in others.

The cause of PATM is a puzzle to sufferers and researchers alike.

Some people say their symptoms started during a time when they were eating a lot of fast food or experiencing high stress.

Others describe the loneliness of not just being physically isolated, but of being misunderstood by doctors, friends and family.

NHS England told Sky News it follows NICE guidelines, and there are none for PATM .