The woman who needs a veil of protection from modern life

Sarah Dacre is one of a growing band of people who claim to be experiencing extreme - and incapacitating - sensitivity to electrical appliances, as well as to certain frequencies of electromagnetic waves.

"Wi-Fi, or wireless broadband networks, seem to be the worst thing," she says.

"Closely followed by mobile phones - particularly if they're being used in an enclosed space - the base stations of cordless telephones and mobile phone masts."



Her symptoms include hair loss, sickness, high blood-pressure, digestive and memory problems, severe headaches and dizziness.

They strike with such ferocity that, since diagnosing herself as "electrically sensitive" in May 2005, she has been marooned at home.

She can venture into built-up areas only if she is swathed in a net-and-hat ensemble made from a special "shielding fabric" that makes her look like a bee-keeper.

"I'm sure people laugh," she says, "but I don't mind as long as it keeps me well."