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xerosis Definitions

noun

dryness

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  • with skimpy clothing and revealing bathing suits during the summer, it's hard to hide any flaws — flaky, dry skin being one of them. unlike winter's bulky turtlenecks and baggy corduroys, summer's style follows the skin-is-in theory. so how do you avoid dry skin, or xerosis, in the summer and keep your skin looking great in that itsy, bitsy, polka-dot bikini? everydayhealth.com

  • xerophthalmia: dry eyes. xerophthalmia can be associated with systemic diseases, such as sjogren's syndrome, systemic lupus erythematosus, and rheumatoid arthritis; deficiency of vitamin a; and use of some medications. it results from inadequate function of the lacrimal glands, which produce tears. when xerophthalmia is due to vitamin a deficiency, the condition begins with night blindness and conjunctival xerosis (dryness of the eye membranes), progresses to corneal xerosis (dryness of the cornea), and in its late stages develops into keratomalacia (softening of the cornea). treatment depends on the severity of the condition and ranges from artificial tears and ointments to plugging of the tear ducts. also known as conjunctivitis arida. medicinenet.com

  • among people who survive, long-term effects of sjs/ten can include changes in skin coloring (pigmentation), dryness of the skin and mucous membranes (xerosis), excess sweating (hyperhidrosis), hair loss (alopecia), and abnormal growth or loss of the fingernails and toenails. other long-term problems can include impaired taste, difficulty urinating, and genital abnormalities. a small percentage of affected individuals develop chronic dryness or inflammation of the eyes, which can lead to increased sensitivity to light (photophobia) and vision impairment. medlineplus.gov

  • according to cary crall, md, and colleagues, "short-term risks of uvb phototherapy include erythema, blistering, and xerosis, accompanied by pruritus, photosensitive eruptions, and recurrent herpes simplex virus infections. provoking anxiety is another potential risk and should be discussed. long-term risks include photo-aging and cutaneous carcinogenesis. the true carcinogenic potential in children remains unclear." medpagetoday.com

  • impaired dark adaptation of the eyes, which can lead to night blindness, is an early symptom of vitamin a deficiency. xerophthalmia (which is nearly pathognomonic) results from keratinization of the eyes. it involves drying (xerosis) and thickening of the conjunctivae and corneas. superficial foamy patches composed of epithelial debris and secretions on the exposed bulbar conjunctiva (bitot spots) develop. in advanced deficiency, the cornea becomes hazy and can develop erosions, which can lead to its destruction (keratomalacia). merckmanuals.com