Here are some eye-opening facts and statistics regarding the effect of healthy trees and shrubs: 1  Homes with âexcellentâ landscaping can expect a sale price 6-7% higher than equivalent houses with âgoodâ landscaping. 2  Landscaping can bring a recovery value of 100-200% at selling time.
Other than stress, the causes of chronic hives are quite different when compared to the causes of acute hives. Allergies only cause about 5 to 10% of chronic hives cases. When allergies cause chronic hives, pet allergy is usually to blame. Pollen, mold or dust mite allergies only rarely cause chronic hives. Chronic infections, such as viral hepatitis, sinus infections, and urinary tract infections, can cause chronic hives. Some studies have shown that infection with Helicobacter pylori, a bacteria commonly connected with stomach ulcers, is also associated with chronic hives.
A bout of hives usually lasts less than 6 weeks. These hives are called acute hives. If hives last more than 6 weeks, they are called chronic hives. Acute hives often result from an allergy, but they can have many other causes. The medical term for hives is urticaria (ur-tih-CARE-ee-uh). When large welts occur deeper under the skin, the medical term is angioedema (an-gee-oh-eh-dee-ma). This can occur with hives, and often causes the eyelids and lips to swell.