Can Sudden Weather Change Cause Sudecks Atropy On Legs And Arms?

My daughter aged 19 was diagnosed with Sudecks Atrophy in 2005. She generally has attacks twice a year and its normally her left leg only. Last time (last year) her right hand and arm was affected. On Tuesday of this week, within 3 hours both her left leg and right arm became affected with sudecks and it has been very painful. On Thursday the colour discolouration occured and swelling started. Our weather in SA has been strange lately we've had 2 months of very hot weather and about a week ago our weather changed to be bit cooler. Could this be causing her attacks. I really need some help with this. She's one of a twin and I cannot see her going through this pain. Is there any doctor who can assist me? Please help..... Susan French (South Africa)