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The phenomenon of referred itch was documented as early as 1733. Around that time, the English scientist Stephen Hales observed that when an area of the body was scratched by the nails, an itching sensation could be triggered on a distant part of the body. He had called the phenomenon the many "Instances of the Sympathy of the Nerves."
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Pruritus ani (also known as anusitis), irritation of skin at the exit of the rectum (anus), causing the desire to scratch; Referred itch, a phenomenon in which a stimulus applied in one region of the body is felt as an itch or irritation in a different part of the body
The scratch reflex is an automatic response to the activation of sensory neurons located on the surface of the body. [1] Sensory neurons can be activated via stimulation, such as a parasite on the body, but can also be activated by responding to a chemical stimulus that produces an itching sensation.
In feng shui, certain hours of the day are believed to be linked to different body parts. Therefore, waking up at the same time each night indicates an issue with that body part, or the emotions ...
Your circadian rhythm tells the body when it’s time to sleep and tends to line up with your past sleep-wake cycles and the exposure to light throughout the day. If this rhythm is thrown off, or ...
As a consequence, it causes a jerk to wake the sleeper up so they can catch themselves. [11] A researcher at the University of Colorado suggested that a hypnic jerk could be "an archaic reflex to the brain's misinterpretation of muscle relaxation with the onset of sleep as a signal that a sleeping primate is falling out of a tree.
Beyond our joints and muscles simply getting older, here is a closer look at the most common reasons for your body aches, why your body responds with pain in the first place, and how to find ...