MawB You may well be allergic to what's in the rain. I thought my GP was joking when, years ago, I kept getting a swollen throat - not sore, but _very- painful. She looked at my notes and said that, as I am allergic to all the 'mouldy' (mycins) antibiotics it could well be that, under certain conditions, I could be allergic to rain! I thought she was joking, but she explained that, after a very hot dry period of weather, then rain, there were more mould spores in the air. Hence the reaction to rain! HTH