You must have come across the irritating sound resulting from a sharp object scratching another rough surface. Ever wondered what it is called? Finger nails scraping a blackboard It is called 'Grima' Although it is not yet included in standard English, mostly Spanish speakers call it so, when they hear this unpleasant sound, resulting from a chalk or nails scratching against a blackboard, a fork scratching a plate, nails scratching a wall etc. Psychologists say, it should be considered distinct from other emotions. It is seen that some people can bear this sound to some extent whereas some can't bear it even for a second. What Spanish speakers mean by 'Grima' is, an unpleasant sensation, shivering and repulsion. Stimuli that draws it out , includes squeaking noises of doors, scratching with fingernails on surfaces etc. It is rated as less pleasant than disgust. It is also seen that people get a sensation of itchy skin and goosebumps in such cases. Research: Over ...
Ever experienced numbness in your arms or legs with no serious physical cause? ..You sure did!
This article is about the abnormal, tingling, prickling sensation called 'Paresthesia', mostly in your arms and legs that you often get after being in a position with your arms or legs pressed, for a long time.
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| Numbness in feet |
Paresthesia is usually painless and can take place anywhere in the body, but most commonly felt in arms and legs. The most familiar kind of Paresthesia is the sensation known as 'pins and needles' after having a limb 'fall asleep'. Another unfamiliar and uncommon type of it, is Formication - the sensation of insects crawling underneath your skin.
Etymology:
The word Paresthesia is derived from the Greek word 'para' meaning 'abnormal', and 'aisthesia' meaning 'sensation'.
Causes:
Paresthesia of the hands, feet and legs are common transient symptoms. The shortest, electric shock type of paresthesia can be caused by tweaking the ulnar nerve near the elbow.
The most common, everyday cause is temporary restriction of nerve impulses to an area of nerve, commonly caused by leaning or resting on parts of the body, such as legs, often followed by a 'pins and needles', tingling sensation.
Other common examples occur when pressure has been applied over a nerve, stimulating it's function. Removing the pressure usually relieves the paresthesia. Most pressure-induced paresthesia results from awkward posture, such as sitting cross-legged for a long period of time.
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| Paresthesia in feet. |
Chronic:
In some cases, it doesn't go away; or if it does, it comes back regularly, that's called Chronic paresthesia and it could be a sign of medical condition or nerve damage.
Chronic paresthesia indicates with the functioning of neurons or poor circulation. In older individuals, it is often the result of poor blood circulation in the limbs.
So, the next time you have 'pins and needles' in any part of your body, you know what exactly it is!
Thank you so much for going through this article.
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