Raynaud’s phenomenon
Definition
Raynaud’s phenomenon is a condition in which cold temperatures or strong emotions cause blood vessel spasms that block blood flow to the fingers, toes, ears, and nose.
Causes
Raynaud's phenomenon can be associated with diseases of the arteries such as:
Other causes of Raynaud's phenomenon may include:
- Repeated injury, particularly from vibrations such as those caused by typing or playing the piano
- Overdose of of certain medicines, including ergot compounds and methysergide
- Smoking
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