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HAVS, also known as vibration white finger (VWF) or dead finger, [1] is a secondary form of Raynaud's syndrome, an industrial injury triggered by continuous use of vibrating hand-held machinery. Use of the term vibration white finger has generally been superseded in professional usage by broader concept of HAVS, although it is still used by the ...
In contrast, humans are less averse to the white noise than to scraping. [4] A 1986 study used a tape-recording of a three-pronged garden tool similar to a fork being "grided" across a chalkboard, which roughly reproduces the sound of fingernails on chalkboard. The recording was then manipulated, removing pitches at the extremities and the median.
Typically the fingers, and, less commonly, the toes, are involved. [1] Rarely, the nose, ears, nipples, or lips are affected. [1] The episodes classically result in the affected part turning white and then blue. [2] Often, numbness or pain occurs. [2] As blood flow returns, the area turns red and burns. [2]
It is a pronation–supination tremor that is described as "pill-rolling"; that is, the index finger of the hand tends to get into contact with the thumb, and they perform a circular movement together. [1] [2] Such term was given due to the similarity of the movement in PD patients with the former pharmaceutical technique of manually making ...
Chemical Agents Warning Properties Latency Period Initial Symptoms Blister Agents Lewisite Gas: colorless Odor: geraniums Seconds to minutes
Scraping uses a small hand device with a rounded edge to gently scrape the scalp or the skin. Another ancient device that creates mild bruising is a strigil , used by Greeks and Romans in the bath. Archaeologically there is no precedent for scraping tools before Greek archaeological evidence, not Chinese or Egyptian.
The boy had a sore throat, cough, and swollen glands — but it was the bruising on his back that led doctors to test for leukemia. His mom, Wendy, advises parents to "trust their guts and to keep ...
He spoke Spanish. There was a laceration above his right eye and a small amount of blood on the sheets near his head. Goldberg and about 20 other doctors and nurses in blue scrubs clustered around him, checking vital signs, asking questions. Goldberg wore purple latex gloves. She tapped lightly on the patient’s left forearm with one hand.