People who have primary Raynaud's (Raynaud's disease) or secondary Raynaud's (Raynaud's phenomenon) can have attacks in response to cold temperatures or emotional stress.
Raynaud's attacks usually affect the fingers and toes. Rarely, the attacks affect the nose, ears, nipples, or lips.
During a Raynaud's attack, the arteries become very narrow for a brief period. As a result, little or no blood flows to affected body parts. This may cause these areas to:
Raynaud's attacks can last less than a minute or as long as several hours. Attacks can occur daily or weekly.
Attacks often begin in one finger or toe and move to other fingers or toes. Sometimes only one or two fingers or toes are affected. Different areas may be affected at different times.
Severe secondary Raynaud's can cause skin sores or gangrene. "Gangrene" refers to the death or decay of body tissues. Fortunately, severe Raynaud's is rare.
Clinical trials are research studies that explore whether a medical strategy, treatment, or device is safe and effective for humans. To find clinical trials that are currently underway for Raynaud's, visit www.clinicaltrials.gov.
September 2, 2014
Gary H. Gibbons
Researcher Brings Medicine One Step Closer to Widely Available Cure for Sickle Cell Disease
The NHLBI updates Health Topics articles on a biennial cycle based on a thorough review of research findings and new literature. The articles also are updated as needed if important new research is published. The date on each Health Topics article reflects when the content was originally posted or last revised.