A mechanism which can lead to hay fever and other allergic reactions, by preventing the immune system from regulating itself properly, has been discovered by scientists.

A protein in mice known as RGS13 suppresses allergic reactions, including the severe, life-threatening allergic reaction known as anaphylaxis, according to scientists at the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health (NIH).

U.S. researchers’ new studies showed that "permanent makeup" which is just another form of tattoo in place of cosmetics such as eyeliner or lipstick, and which is used by more than 8 million women in the nation, may cause serious problems, particularly for people, who had a history of allergy.

Endocannabinoids seem to play an important role in regulating inflammation processes. Scientists from the University of Bonn have discovered this in experiments on mice. Their results will be published in the distinguished scientific journal 'Science' on Friday, 8 June. The study may also have implications for therapy. In animal experiments, a solution with an important component made from cannabis reduced allergic reactions of the skin.

Allergic-like reactions to newer iodine-containing contrast agents (nonionic contrast media), are rare in children according to a recent study conducted by researchers from the University of Michigan Medical Center and C.S. Mott Children's Hospital both in Ann Arbor.

Despite hundreds of families being told their children have peanut allergies every year, many of the children may be able to eat peanuts safely, a study by researchers at UNSW and the Sydney Children's Hospital has found.