'I was so scared of fish that I couldn't even watch Finding Nemo with my son'. Lynsey is one of the millions who suffers from strange phobias - but now medical experts are trialling a radical new 3-step treatment to cure even the most severe anxieties

For much of her life, Lynsey Chalmers, 30, couldn't bear to be beside the seaside. Aquariums, too, were off limits, as were ponds. A goldfish bowl would trigger cold sweats.