Seasonal variations in MS relapse confirmed

Not only are there seasonal variations in the risk of relapse in multiple sclerosis, but they change according to latitude, a large international study has shown.

Data from 10,000 MS patients in 30 countries revealed a cyclical pattern to MS relapse, with peaks in early spring and troughs in autumn.

The peak hits at around the March 7 in the northern hemisphere and the September 5 in the southern hemisphere, say the researchers led by Dr Tim Spelman from the department of neurology at the Royal Melbourne Hospital.

This represents a lag of just under three months between peak MS relapse and