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Dermatographic urticaria is sometimes called "skin writing", as it is possible to mark deliberate patterns onto the skin. The condition manifests as an allergic-like reaction, causing a warm red wheal to appear on the skin. As it is often the result of scratches, involving contact with other materials, it can be confused with an allergic ...
The intensity of pain reported is consistently reduced in response to touch. [5] [6] [7] This occurs whether the touch is at the same time as the pain, or even if the touch occurs before the pain. [8] Touch also reduces the activation of cortical areas that respond to painful stimuli. [9]
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 ...
Amplified musculoskeletal pain syndrome (AMPS) is an illness characterized by notable pain intensity without an identifiable physical cause. [1] [6] Characteristic symptoms include skin sensitivity to light touch, also known as allodynia. Associated symptoms may include changes associated with disuse including changes in skin texture, color ...
The skin weighs an average of 4 kg (8.8 lb), covers an area of about 2 m 2 (22 sq ft), and is made of three distinct layers: the epidermis, dermis, and subcutaneous tissue. [1] The two main types of human skin are glabrous skin, the nonhairy skin on the palms and soles (also referred to as the "palmoplantar" surfaces), and hair-bearing skin. [16]
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.
Toxic epidermal necrolysis (TEN), also known as Lyell's syndrome, is a type of severe skin reaction. [2] Together with Stevens–Johnson syndrome (SJS) it forms a spectrum of disease, with TEN being more severe. [2] Early symptoms include fever and flu-like symptoms. [2] A few days later the skin begins to blister and peel forming painful raw ...
Cutaneous receptors are at the ends of afferent neurons. works within the capsule. Ion channels are situated near these networks. In sensory transduction, the afferent nerves transmit through a series of synapses in the central nervous system, first in the spinal cord, the ventrobasal portion of the thalamus, and then on to the somatosensory cortex.