aesth-, esth-, aesthe-, esthe-, aesthesio-, esthesio-, aesthesia-, -esthesia, -aesthetic, -esthetic, -aesthetical, -esthetical, -aesthetically, -esthetically
(Greek: feeling, sensation, perception)
2. A perceptual lack of awareness of muscular movements or physical positions: Jonathan experienced kinesthesia and was unable to identify any physical motions or the actual positions of his legs.
2. A neurologic or pharmacologic state in which painful stimuli are so moderated that, though still perceived, they are no longer painful: Dr. Jones, the neurologist, studied the effect of the new medication on the alganesthesia of patients from the combat zone.
Beyond the pleasures and assurances of touch, there is always the looming possibility of pain. As a survival mechanism, pain warns our brains of danger and tells us to act to correct or avoid the cause.
Pain receptors, free nerve endings, are spread over a larger area than any of the other sensory receptors. They completely ignore light contact, and only fire up if the stimuli threaten to damage the tissue.
There are more pain receptors in the skin than other types of skin sensors, but they are not evenly distributed; for example, the neck and eyelids are densely covered, but there are few receptors on the sole of the feet and on the ball of the thumb, which is why the needle prick for a blood sample is often done on the thumb.
The prevalence of pain disorders are twice as high in women as in men; when the peak of onset is in the fourth and fifth decades.
The most common sites of pain are the lower back, the head, the face, and the pelvis. It is estimated that low back pain disables seven million Americans and accounts for more than eight million physician office visits each year.
Man endures pain as an undeserved punishment; a woman accepts it as a natural heritage.
When she stubbed her toe on the rock, Katherine exclaimed that she was experiencing severe algesthesis.
Pain exists beyond a simple touch
Pain warns our brains of danger and tells us to act to correct the situation, or to avoid whatever caused the pain.
Is there anyone who does not have vivid memories of burning one's hand on a hot stove and quickly withdrawing it? Pain is a powerful reminder and so we learn to be very careful and to avoid whatever caused it.
Pain does not always warn us of danger. It comes too late for us to avoid a bad sunburn, and a tumor in the brain can grow unnoticed because the tissue within our skulls has no pain receptors.
There are more pain receptors in the skin than other types of skin sensors, but they are not evenly distributed. For example, the neck and eyelids are densely covered, but there are few receptors on the soles of the feet and on the balls of the thumb, which is why a needle prick for a blood sample is often done on one of the thumbs.
The index of anesthesia history, Parts 1, 2, and 3.
Related-word units meaning feeling: senso-; pass-, pati-; patho-.