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Photographic Comparison of: 1) a canker sore – inside the mouth, 2) herpes labialis, 3) angular cheilitis and 4) chapped lips. [4]Chapped lips (also known as cheilitis simplex [5] or common cheilitis) [6] is characterized by the cracking, fissuring, and peeling of the skin of the lips, and is one of the most common types of cheilitis.
An itch, also known as pruritus, is classified as a sensory stimulation to scratch a certain area of the skin. An itch can be a fleeting sensation, as with a random tickle or prick, or persistent, as with a rash such as eczema or other skin irritant such as an allergen. Itch has been demonstrated to be closely related to pain and to share many ...
Aphthous stomatitis, [2] or recurrent aphthous stomatitis (RAS), commonly referred to as a canker sore or salt blister, is a common condition characterized by the repeated formation of benign and non-contagious mouth ulcers (aphthae) in otherwise healthy individuals.
Diagramatic representation of mucosal erosion (left), excoriation (center), and ulceration (right) Simplistic representation of the life cycle of mouth ulcers. An ulcer (/ ˈ ʌ l s ər /; from Latin ulcus, "ulcer, sore") [2] is a break in the skin or mucous membrane with loss of surface tissue and the disintegration and necrosis of epithelial tissue. [3]
Itch is readily abolished in skin areas treated with nociceptor excitotoxin capsaicin but remains unchanged in skin areas rendered touch insensitive by pretreatment with anti-inflammatory saponins. Although experimentally induced itch can still be perceived under a complete A-fiber conduction block, it is significantly diminished. Overall, itch ...
Other disorders may cause lip enlargement (e.g. orofacial granulomatosis), [5] which alters the local anatomy and extenuates the skin folds at the corners of the mouth. More still may be involved because they affect the immune system, allowing normally harmless organisms like Candida to become pathogenic and cause an infection.
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This causes the person to rub or scratch the affected area. Constant scratching causes the skin to thicken. The thickened skin itches, causing more scratching, causing more thickening. Affected area may spread rapidly through the rest of the body. Many hypothesize LSC has a psychosomatic origin. [3] Those predisposed to itch as a response to ...