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These units are mostly on the face, neck, upper chest, shoulders, and back. [3] Excess keratin combined with sebum can plug the opening of the follicle. [3] [8] This small plug is called a microcomedo. [8] Androgens increase sebum (oil) production. [3] If sebum continues to build up behind the plug, it can enlarge and form a visible comedo. [8]
In humans, goose bumps occur everywhere on the body, including the legs, neck, and other areas of the skin that have hair. In some people, they even occur in the face or on the head. In humans, goose bumps tends to occur across the whole body, especially when elicited by thermal or emotional stimuli, and only locally when elicited via tactile ...
Such bundles are able to send an action potential from the autonomic nervous system to the rest of the body. However, action potentials in this system are not being received by the second or third thoracic vertebrae which innervates the face, neck, and upper chest. [3] Harlequin syndrome,caused by a defect in sympathetic innervation
Rash due to measles. Many skin conditions affect the human integumentary system—the organ system covering the entire surface of the body and composed of skin, hair, nails, and related muscle and glands. [1]
The term 'cervical' refers to the cervical lymph nodes in the neck; it is unrelated to the cervix. The alternative name scrofula comes from the medieval Latin scrōfula , diminutive of scrōfa , meaning brood sow , because swine were supposed to be subject to the complaint, [ citation needed ] or because the line of elevated lymph nodes was ...
AIDS – a disease caused by a virus that cripples the body's immune defenses. Graves' disease – a thyroid disorder, most often in women, which can cause a goiter (swelling in the front part of the neck) and protruding eyes. Systemic lupus erythematosus – a connective tissue disorder involving mainly the skin, joints and kidneys.
These cells form on the surface of the skin, on the lining of hollow organs in the body, and on the lining of the respiratory and digestive tracts. [ 1 ] The squamous-cell carcinomas of different body sites can show differences in their presented symptoms, natural history , prognosis , and response to treatment .
A pimple or zit is a kind of comedo that results from excess sebum and dead skin cells getting trapped in the pores of the skin. In its aggravated state, it may evolve into a pustule or papule. [1]