<prompt> All of the following are true regarding Raynauds phenomenon except:It involves acral pas of fingersMigratory thrombophlebitis exclusive for Raynauds phenomenonDrugs acting by inhibiting the beta-receptors in blood vessels also play a roleEmotional stress may also precipitate Raynauds phenomenon  <response>: Migratory thrombophlebitis is seen in: Raynauds phenomenon Buergers Disease Malignancies like Ca Pancreas-known as Trousseau Syndrome RAYNAUDS PHENOMENON- It is episodic digital ischemia On exposure of cold Emotional stress Use of vibrating tools- Manifested by - Sequential development of digital blanching, cyanosis and redness offingers and toes Sequence of EventsBlanching Stage of local syncopeCyanosis Stage of local asphyxiaRedness Stage of RecoveryBlanchingExposure of coldSpasm of digital aeriolesDigits appear white CyanosisCapillaries Venules dilatesCollection of deoxygenated bloodCyanosisRednessResolution of digital spasmIncreased blood flow in dilated aeries and capillariesBright red colour of digits Clinical features- Most common in Fingers Toes- Radial, ulnar and pedal pulses are normalTypes1. Primary Idiopathic Raynauds disease2. SecondaryTreatment - To relieve spasm - Calcium channel blockers Diltiazem Nifedipine 