Secondary hypertension is more common in preadolescent children, with most cases caused by renal disease. Primary or essential hypertension is more common in adolescents and has multiple risk factors, including obesity and a family history of hypertension.
Midge (family Chironomidae), also called chironomid, nonbiting midge, or gnat, any of a group of tiny two-winged flies (order Diptera) that superficially resemble mosquitoes. Although they resemble mosquitoes, midges are harmless, with small mouthparts that are not elongated into a piercing structure for blood feeding. They do not have scales on wings or body, and the pattern of wing veins differs from that of mosquitoes. The male antennae are feathery.
DOUG WILSON DESCRIBES HOW A MIDGE BITES A HORSE. Dr Doug Wilson a vet from Bristol describes how midges bite horses and set off the allergic reaction: After alighting on a horse, midges crawl down the hair shafts to the skin surface.