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.
Pathophysiology. Rupture of the membranes is the most common cause of oligohydramnios. However, because the amniotic fluid is primarily fetal urine in the latter half of the pregnancy, the absence of fetal urine production or a blockage in the fetus' urinary tract can also result in oligohydramnios.
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.