London: It has been estimated that about one in every 450 pregnant women are unaware of their pregnancy until the 20th week or later. One in 2,500 remains oblivious until she actually goes into labour. The most common reason for this is that they suffer from Polycystic Ovary Syndrome or PCOS, as it is referred to by the medical fraternity.
According to The Mayo Clinic, PCOS is a very common endocrine system disorder among women of reproductive age. Those with PCOS may have enlarged ovaries containing small collections of fluid called follicles, located on each ovary.
PCOS Causes, Symptoms and Treatment
Although the real cause it yet to be determined, a large number of women are diagnosed with the syndrome across the world. Owing to its symptoms, which include infrequent or prolonged menstrual periods, excessive hair growth, acne and obesity, many patients confuse pregnancy with PCOS. Consequently, they fail to realise that they are expecting.