Phenomenon, Raynaud's
A condition resulting in discoloration of fingers and/or toes when a person is exposed to changes in temperature (cold or hot) or emotional events. The skin discoloration occurs because an abnormal spasm of the blood vessels causes a diminished blood supply. Initially, the digits involved turn white because of diminished blood supply, then turn blue because of prolonged lack of oxygen and finally, the blood vessels reopen, causing a local "flushing" phenomenon, which turns the digits red. This three-phase color sequence (white to blue to red), most often upon exposure to cold temperature, is characteristic of Raynaud's phenomenon. Raynaud's phenomenon occurs with a number of conditions including rheumatic diseases (scleroderma, rheumatoid arthritis, systemic lupus erythematosus), hormone imbalance (hypothyroidism and carcinoid), trauma (frostbite, vibrating tools), medications (propranolol/INDERAL, estrogens, nicotine, bleomycin) and, rarely, cancer. The phenomenon is named for the French physician Maurice Raynaud (1834-1881).

Medical dictionary. 2011.

Look at other dictionaries:

  • Raynaud's disease — Infobox Disease Name = Raynaud s disease ICD10 = ICD10|I|73|0|i|70 ICD9 = ICD9|443.0 DiseasesDB = 11186 OMIM = 179600 eMedicineSubj = med eMedicineTopic = 1993 MedlinePlus = 000412 MeshName = Raynaud MeshNumber = C14.907.744 Raynaud s disease… …   Wikipedia

  • Raynaud's phenomenon — A condition resulting in discoloration of fingers and/or toes when a person is exposed to changes in temperature (cold or hot) or emotional events. The skin discoloration occurs because an abnormal spasm of the blood vessels causes a diminished… …   Medical dictionary

  • Raynaud's — may be:* Raynaud s phenomenon, pattern of reducing blood flow to extremities in response to cold, vibration, and/or emotional stress ** Raynaud s disease, aka primary Reynaud s, Raynaud s phenomenon independent of diseases with other symptoms See …   Wikipedia

  • Raynaud's phenomenon — [rā nōz′] n. 〚after M. Raynaud (1834 81), Fr physician〛 a secondary circulatory disorder, often associated with a primary vascular disease, characterized by changes of blood flow resulting in white, bluish, or red hands and feet: as a primary… …   Universalium

  • Raynaud's phenomenon — [rā nōz′] n. [after M. Raynaud (1834 81), Fr physician] a secondary circulatory disorder, often associated with a primary vascular disease, characterized by changes of blood flow resulting in white, bluish, or red hands and feet: as a primary… …   English World dictionary

  • Raynaud — may refer to:Medicine* Raynaud s disease * Raynaud s phenomenonPeople* Dr. Alain Raynaud, Bordeaux winemaker of Château Quinault * Michel Raynaud, (1938 ndash;) mathematician working in algebraic geometry …   Wikipedia

  • Raynaud's phenomenon — Infobox Disease Name = Raynauds phenomenon Caption = Hands with Raynaud s phenomenon DiseasesDB = 25933 ICD10 = ICD10|I|73|0|i|70 ICD9 = ICD9|443.0 ICDO = OMIM = MedlinePlus = eMedicineSubj = med eMedicineTopic = 1993 MeshID = D011928 Raynaud s… …   Wikipedia

  • Raynaud disease — A condition resulting in skin discoloration of the fingers and/or toes when a person is exposed to changes in temperature (cold or hot) or to emotional events. This condition can occur alone or as a part of another disease (such as rheumatoid… …   Medical dictionary

  • raynaud's phenomenon — (ˈ)rā¦nōz noun also raynaud s syndrome Usage: usually capitalized R Etymology: after Maurice Raynaud died 1881 French physician : the symptoms associated with Raynaud s disease * * * Raynaud s phenomenon, a condition in which the hand or fingers… …   Useful english dictionary

  • Raynaud phenomenon — intermittent bilateral ischemia of the fingers, toes, and sometimes ears and nose, with severe pallor and often paresthesias and pain, usually brought on by cold or emotional stimuli and relieved by heat; it is usually due to an underlying… …   Medical dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”