Lower tract infections â These include cystitis (bladder infection) and urethritis (infection of the urethra). Lower urinary tract infections commonly are caused by intestinal bacteria, which enter and contaminate the urinary tract from below, usually by spreading from the skin to the urethra and then to the bladder.
And again, in Rheumatoid Arthritis, the onset is almost always symmetrical. Later in the development of the Rheumatoid Arthritis, the sounds can change to creaking, as in a knee; clicking, especially in the neck; or grinding, in ball joints like shoulders.
Rheumatoid arthritis probably results from a combination of genetic and environmental factors, many of which are unknown. Rheumatoid arthritis is classified as an autoimmune disorder, one of a large group of conditions that occur when the immune system attacks the body's own tissues and organs.In people with rheumatoid arthritis, the immune system triggers abnormal inflammation in the membrane that lines the joints (the synovium).he inheritance pattern of rheumatoid arthritis is unclear because many genetic and environmental factors appear to be involved. However, having a close relative with rheumatoid arthritis likely increases a person's risk of developing the condition.