More severe symptoms include fever, chills, and a jaundice. Jaundice is a condition where bile is backed up into the liver when gallstones block the cystic duct. This causes the bile to be forced into the bloodstream, where it will travel and cause your skin and the whites of your eyes to turn yellow.
The Sun is a huge, glowing sphere of hot gas. Most of this gas is hydrogen (about 70%) and helium (about 28%). Carbon, nitrogen and oxygen make up 1.5% and the other 0.5% is made up of small amounts of many other elements such as neon, iron, silicon, magnesium and sulfur.
Have you ever wondered what about the other elements in the sun? I hunted up a table (source: NASA-Goddard Space Flight Center) listing the sun's elemental composition, which we know from analysis of its spectral signature. I'm sure you're not surprised that hydrogen is the most abundant element. The sun is constantly fusing hydrogen into helium, but don't expect the ratio of hydrogen to helium to change anytime soon. The sun is 4.5 billion years old and has converted about half of the hydrogen in its core into helium.