Depending on which part of the nervous system is affected, symptoms could include headache, dizziness, memory loss, numbness, pain, vision problems, and difficulty walking. Mount Sinaiâs NeuroAIDS Program specializes in diagnosing and treating the full range of HIV-related neurological disorders.
Many greenhouse gases occur naturally in the atmosphere, such as carbon dioxide, methane, water vapor, and nitrous oxide, while others are synthetic. Those that are man-made include the chlorofluorocarbons (CFCs) , hydrofluorocarbons (HFCs) and Perfluorocarbons (PFCs), as well as sulfur hexafluoride (SF 6).
The noble gases include helium, neon, argon, krypton, xenon, and radon. 1  Helium has the atomic number two and is the second most abundant element in the universe. 2  Neon has the atomic number ten and is commonly used in lamps for the red-orange glow it gives off when exposed to electricity.  Argon has the atomic number 18.