Awasome Allergic To Blood Ideas. Web if you're allergic, you'll likely develop a raised bump (hive) at the test location on your skin. Anaphylaxis causes the immune system to release a flood of chemicals that can cause you to go into shock — blood pressure drops suddenly and the airways narrow, blocking breathing.
Web it can occur within seconds or minutes of exposure to something you're allergic to, such as peanuts or bee stings. These tests can confirm the diagnosis of an allergic disorder, supplementing a clinical history consistent with an immediate allergic reaction. Anaphylaxis causes the immune system to release a flood of chemicals that can cause you to go into shock — blood pressure drops suddenly and the airways narrow, blocking breathing.
