It can be bought over the counter in chemists' for head lice and is a garden pesticide. Dr Jamal said the warnings in the leaflet which accompanies the head lice product were inadequate.Dimethyl phosphorothionate, otherwise known as fenitrothion, and azamethiphos are spray insecticides - the latter for killing flies in livestock houses, and Diazinon for use in sheep-dips.. Malathion, which the Ministry of Defence had already admitted taking to the Gulf, is regarded as one of the safest OPs. Dr Jamal said: ``There is evidence of physical damage to the nerves in the limbs.'' Furthermore, victims seem to suffer some memory loss, harm to their sense of balance, depression, fatigue and a change of personality which makes them prone to rages.All the pesticides listed by the Government are licensed for use in Britain following toxicity testing on animals.But they should only be used in strict accordance with safety rules, including the use of protective clothing, and there is evidence that both American and British troops failed to do that in the Gulf when the pesticides were sprayed. First there are flu-like symptoms of lethargy and dizziness, followed by a weakening of the muscles around the hips and shoulders after three days."Less is known about the more severe long-term effects,believed to result from repeated exposure.

There is growing concern about their long term impacts on human health and the damage they do to nervous systems. Research is continuing into how they affect peripheral nerves and the brain. In Britain, the fears have increased because of the hundreds of farmers who appear to have suffered severe, long-term illness after using OP sheep-dip chemicals. Dr Goran Jamal, a consultant at the Institute of Neurological Sciences in Glasgow, said: ``There's no dispute that there is a short-term effect on people exposed to OPs and an intermediate-term effect. Organophosphate (OP) pesticides are widely used against insects in agriculture. MoD denies the ailment exists.MAY 1994 - A committee of independent medical experts says that the illness does exist but fail to pinpoint a cause.NOVEMBER 1994 - 24 British Gulf war veterans have requests for legal aid granted to prepare claims against the MoD.FEBRUARY 1995 - 480 sufferers of the syndrome inform the MoD that they intend to sue for compensation.APRIL 1995 - Government announces in the Lords that it is not prepared to pay compensation.JUNE 1995 - Ministry of Defence dismisses Gulf war syndrome, saying that alleged sufferers are victims of chronic fatigue.NOVEMBER 1995 - The defence select commitee criticises the MoD for being insensitive to the victims of the syndrome.MARCH 1996 - Tests on veterans shows first physical evidence that the syndrome exists..

"I think there is a definite link," he said.The battle for recognitionFEBRUARY 1991 - The Gulf war ends.JUNE 1993 - Gulf war syndrome hits the headlines asToday newspaper reveals that hundreds of soldiers were suffering from bleeding gums, hair and weight loss and facial paralysis. Others attribute the symptoms to post-traumatic stress disorder brought on by the war itself.Mr Ash believes the latest MoD admission is evidence of similarities with the fate of some farmers who have become chronically depressed and violent after being exposed to pesticides used in sheep-dip. His revelation yesterday that "organophosphate pesticides were used more widely in the Gulf than we had previously been led to believe" was seen as a softening in the government stance.Some veterans blame their listlessness, nausea and aching limbs on the tablets the troops were given to protect them from chemical attack by the Iraqis. Those who believe in the so-called Gulf war syndrome say it has caused at least 15 deaths.