Reynaud's Syndrome is cold induced. Thoracic Outlet is movement induced. Both have the same end result of reduced or complete elimination of blood flow.
If it's vascular she could also have an old fashioned partial occlusion or intimal medial tear.
Again, have her tested to see if it is vascular or neurogenic.
If it's vascular she could also have an old fashioned partial occlusion or intimal medial tear.
Again, have her tested to see if it is vascular or neurogenic.