Raynaud's syndrome is most common, blanching of the last 2/3rds of the digits of the hand with cold, stress
, or fear most common.
Thickening of the skin of hands (sclerodactaly) is the second most common. Food sticking in the throat is another early sx. However some people can get early pulmonary or renal problems at the same time, or even before these other occur. If you have these, see a rheum.