Although the symptoms of an anaphylactic reaction usually occur within seconds to minutes after exposure to a trigger, some reactions can occur up to two hours after the exposure. Possible symptoms and signs of an anaphylactic reaction include: Skin symptoms: itching, flushing, hives, and swelling (angioedema) Gastrointestinal symptoms: abdominal pain, abdominal cramping, nausea, vomiting, and diarrhea. Respiratory symptoms: nasal congestion, runny nose, cough, shortness of breath, chest tightness, and wheezing. Cardiovascular symptoms: dizziness, lightheadedness, fast heart rate (tachycardia), and low blood pressure. Additionally, those affected often report a feeling of impending doom..
Arsenic is in group 15 of the periodic table. It is sometimes known by a family like name-the nitrogen family. Arsenic belongs to P-block elements.It's also a representati â¦ ve element. They are also called as pnictogens.
Arsenic is a chemical element with symbol As and atomic number 33. Arsenic occurs in many minerals, usually in conjunction with sulfur and metals, and also as a pure elemental crystal. Arsenic is a metalloid. It can exist in various allotropes, although only the gray form has important use in industry.he main use of metallic arsenic is for strengthening alloys of copper and especially lead (for example, in car batteries). Arsenic is a common n-type dopant in semiconductor electronic devices, and the optoelectronic compound gallium arsenide is the most common semiconductor in use after doped silicon.