Raynaud's syndrome, first described in 1862, is a relatively common medical condition in which extreme vaso-constriction of the peripheral blood vessels leads to reduced blood flow in the minor arteries of the fingers and toes, and in some cases the nose, ears, or lips.
The symptoms typically last from a few minutes to a few hours.
Doctors classify the syndrome into two types. The first, 'Primary Raynaud's' is the most common - thought to affect around 10 million people in the UK alone. (ref )
Aside from its association with exposure to cold, its cause is unclear :
It is likely that primary Raynaud's is caused by certain disruptions to the way that the nervous system controls blood vessels, although exactly what causes these disruptions remains unknown.
Source : SRUK
The second, less common variant, is known to be a result of other diseases such as.
Episodes of 'Primary Raynaud's' are typically brought on by cold or emotional stress. It has even been called â€śan allergy to coldnessâ€ť. Smoking and caffeine can exacerbate the attacks.
Also see :
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