Question: what is the difference between primary and secondary raynaud's?
Answer: There are two main types of Raynaud's—primary and secondary. In primary Raynaud's (also called Raynaud's disease), the cause isn't known. Primary Raynaud's is more common and tends to be less severe than secondary Raynaud's. Secondary Raynaud's is caused by an underlying disease, condition, or other factor.