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Cutaneous dysesthesia is characterized by discomfort or pain from touch to the skin by normal stimuli, including clothing. The unpleasantness can range from a mild tingling to blunt, incapacitating pain. [citation needed] Scalp dysesthesia is characterized by pain or burning sensations on or under the surface of the cranial skin. Scalp ...
There are a number of different causes of skin inflammation of the hands, [2] the interplay of which is also significant: environmental factors such as excessive water, contact with allergens or irritants, smoking and genetic disposition. [3] [4] A single catalyst is seldom responsible for the development of hand eczema in patients. [2]
Allodynia is a condition in which pain is caused by a stimulus that does not normally elicit pain. [1] For example, sunburn can cause temporary allodynia, so that usually painless stimuli, such as wearing clothing or running cold or warm water over it, can be very painful.
Hyperesthesia is a condition that involves an abnormal increase in sensitivity to stimuli of the senses.Stimuli of the senses can include sound that one hears, foods that one tastes, textures that one feels, and so forth.
Aδ fibers are characterized by thin axons and thin myelin sheaths, and are either D-hair receptors or nociceptive neurons. Aδ fibers conduct at a rate of up to 25 m/s. D-hair receptors have large receptive fields and very low mechanical thresholds, and have been shown to be the most sensitive of known cutaneous mechanoreceptors.
The number of tactile corpuscles per square millimeter of human skin on the fingertips drops fourfold [clarification needed] between the ages of 12 and 50. The rate at which they are lost correlates well with the age-related loss in touch sensitivity for small probes. [11] [clarification needed]
Hypoesthesia or numbness is a common side effect of various medical conditions that manifests as a reduced sense of touch or sensation, or a partial loss of sensitivity to sensory stimuli. In everyday speech this is generally referred to as numbness. [1]
Paresthesia, also known as pins and needles, is an abnormal sensation of the skin (tingling, pricking, chilling, burning, numbness) with no apparent physical cause. [1] Paresthesia may be transient or chronic, and may have many possible underlying causes. [ 1 ]