As the virus attacks the nervous system, infected dogs develop circling behavior, head tilt, muscle twitches, convulsions with jaw chewing movements and salivation (âchewing gum fitsâ), seizures, and partial or complete paralysis. In wildlife, infection with canine distemper closely resembles rabies.
Most cases of female infertility are caused by problems with ovulation. Without ovulation, there are no eggs to be fertilized. Some signs that a woman is not ovulating normally include irregular or absent menstrual periods. Ovulation problems are often caused by polycystic ovarian syndrome (PCOS). PCOS is a hormone imbalance problem which can interfere with normal ovulation. PCOS is the most common cause of female infertility. Primary ovarian insufficiency (POI) is another cause of ovulation problems. POI occurs when a woman's ovaries stop working normally before she is 40.
The most common cause of female infertility in the united states is a. polycystic ovary syndrome. b. pelvic inflammatory disease. c. endometriosis. d. gonorrhea