GC: n
S: MAYO – https://www.mayoclinic.org/diseases-conditions/sunburn/symptoms-causes/syc-20355922 (last access: 5 March 2023); NHS – https://www.nhs.uk/conditions/sunburn/ (last access: 5 March 2023).
N: 1. sunburn (n): From verb sunburn, 1520s, from “sun” (n.) + “burn” (v.). Sunburnt (c. 1400) is older than sunburned (c. 1500, sunne y-brent). As a noun from 1650s.
2. sunburn, acute cutaneous inflammation caused by overexposure to ultraviolet (UV) radiation of the so-called UVB wavelength band (290–320 nanometre; a nanometre is 10-9 metre), which originates from sunlight or artificial sources. Reactions to overexposure range in severity from mild redness and tenderness to intense pain, edema (swelling), and blistering; systemic symptoms include shock, chills, fever, and nausea. The visible manifestations of sunburn usually begin within 6–12 hours after the first ultraviolet exposure and peak within 24–28 hours, followed by a gradual easing of symptoms and light tanning or “peeling” (the sloughing off of the skin), depending on the severity of the burn.
3. Sunburn begins within 15 minutes after exposure to UV rays, triggering inflammation (the erythema, or redness). To limit epidermal damage, the pigment melanin (which is produced by epidermal cells called melanocytes) darkens through oxidation. Melanocytes increase in both size and number within two to three days, producing more melanin. Within days, a protective tan (in mild cases of sunburn) is formed.
4. Cold compresses applied to the affected skin and analgesic medicines can relieve some of the pain of sunburn. Severe sunburn can be prevented by limiting exposure to ultraviolet rays until a sufficient protective tan has developed or by applying a sunscreen that contains either para-aminobenzoic acid (PABA) or benzophenones. Scientists are developing UV-sensitive devices that warn of potential overexposure to sunlight in order to prevent sunburn. These devices, which could be worn around the wrist, indicate the increasing risk of erythema by using simple colour changes that are induced by UV rays. A long-term effect of prolonged and repeated exposure to sunlight can cause a number of skin disorders, including basal-cell carcinomas (small, smooth nodules) that usually appear on the face (see skin cancer).
5. Skin burn due to excessive exposure to UV rays.
It’s easier to sunburn in high altitudes because there is less atmospheric absorption of ultraviolet rays.
Some parts of the body are more liable to sunburn than others because they are exposed the most.
Even if it’s cloudy, approximately 80 percent of ultraviolet rays reach to earth, so you may burn or tan on an overcast day.
S: 1. OED – https://www.etymonline.com/word/sunburn (last access: 5 March 2023). 2 to 4. EncBrit – https://www.britannica.com/science/sunburn (last access: 5 March 2023). 5. TERMIUM PLUS – https://www.btb.termiumplus.gc.ca/tpv2alpha/alpha-eng.html?lang=eng&i=1&srchtxt=sunburn&index=alt&codom2nd_wet=1#resultrecs (last access: 5 March 2023).
SYN: solar erythema, erythema solare, actinic erythema. (depending on context)
S: GDT – https://vitrinelinguistique.oqlf.gouv.qc.ca/fiche-gdt/fiche/8354521/erytheme-solaire (last access: 5 March 2023)
CR: heat stroke, heat wave.
