Methane, CH4, is a chemical compound composed of one carbon atom and four hydrogen atoms. It is one of the most common gases in the universe, as well as on Earth. While it is valued for its energy-production capabilities, methane also has the ability to potentially wreak havoc on the Earth's fragile ecosystems.ethane, CH4, is a chemical compound composed of one carbon atom and four hydrogen atoms. It is one of the most common gases in the universe, as well as on Earth. While it is valued for its energy-production capabilities, methane also has the ability to potentially wreak havoc on the Earth's fragile ecosystems.
Symptoms of Palindromic rheumatism. The list of signs and symptoms mentioned in various sources for Palindromic rheumatism includes the 6 symptoms listed below: Joint pain. Joint swelling. Joint stiffness. Joint warmth. Skin nodules. Joint redness.
Palindromic rheumatism (PR) is a rare type of arthritis, and is closely related to a more common condition, rheumatoid arthritis (RA). In the case of RA, chronic inflammation and swelling in the joints can lead to bone damage and joint destruction that progresses over time.alindromic rheumatism draws its name from the root word âpalindromic,â which means âto come and come again.â The name Palindromic rheumatism is meant to tell you that this joint condition begins and ends in a similar wayâsuddenly. Click through this slideshow to learn about this type of rheumatic disorder.