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Raynaud's phenomenon (RP) is a condition resulting in a particular series of discolorations of the fingers and/or the toes after exposure to changes in temperature (cold or hot) or emotional events. Skin discoloration occurs because an abnormal spasm of the blood vessels causes a diminished blood supply to the local tissues. Initially, the digit(s) involved turn white because of the diminished blood supply. The digit(s) then turn blue because of prolonged lack of oxygen. Finally, the blood vessels reopen, causing a local "flushing" phenomenon, which turns the digit(s) red. This three-phase color sequence (white to blue to red), most often upon exposure to cold temperature, is characteristic of RP.
Raynaud's phenomenon most frequently affects women, especially in the second, third, or fourth decades of life. People can have Raynauds phenomenon alone or as a part of other rheumatic diseases. When it occurs alone...
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Some products that may interact with this drug include: digoxin, drugs that may harm the kidneys (e.g., aminoglycosides such as gentamicin, cisplatin), phenytoin.
OVERDOSE: If overdose is suspected, contact your local poison control center or emergency room immediately. US residents can call the US National Poison Hotline at 1-800-222-1222. Canada residents can call a provincial poison control center.
NOTES: Laboratory and/or medical tests (e.g., chest X-rays, complete blood counts, kidney tests, liver tests) should be performed periodically to monitor your progress or check for side effects. Consult your doctor for more details.
MISSED DOSE: For the best possible benefit, it is important to receive each scheduled dose of this medication as directed. If you miss a dose, contact your doctor to establish a new dosing schedule. Do not double the dose to catch up.
STORAGE: Not applicable. This medication is given in a hospital or clinic and will not be stored at home.
MEDICAL ALERT: Your condition can cause complications in a medical emergency. For information about enrolling in MedicAlert, call 1-800-854-1166 (USA) or 1-800-668-1507 (Canada).
Information last revised September 2010 Copyright(c) 2010 First DataBank, Inc.
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