Question: what is the difference between raynaud's disease and raynaud's phenomenon?
Answer: 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. This type of Raynaud's is often called Raynaud's phenomenon.