The symptoms of pericarditis depend on the type, but may include: 1  high temperature. 2  sweating and chills. 3  breathing problems, such as breathlessness. 4  dry cough. 5  abnormal heart rhythms, such as accelerated heartbeat (tachycardia) 6  sharp and stabbing chest pains. 7  pain radiating into the left shoulder and arm.
It is not always possible to determine what causes low levels of amniotic fluid. Oligohydramnios can be caused by a continuous leaking of amniotic fluid. It can also occur when the fetus has kidney failure. After about four months of pregnancy, the kidneys of a normal fetus will produce the amniotic fluid. If the fetus has kidney abnormalities, the amount of amniotic fluid may be too low.
The cause is unknown, although an overactive immune system may play a role. Some people may have a genetic tendency toward the disease, and many studies suggest that abnormal hormone levels may also play a role. Some scientists believe that an infectious bacterium, called a spirochete, may cause the changes in the immune system that lead to Lichen Sclerosus. But the fact that most women that get LS are of menopausal age, and also have other auto-immune issues, seems to indicate there is a hormonal and auto-immune connection.