Frequent nighttime urination. This is a possible sign of diabetes as well as prostate problems or urinary- tract infections. This could signal a stricture of the lower esophagus, linked to heartburn or obesity. Can also signal esophageal cancer. The onset of a new type of headache, especially if one-sided, could indicate temporal arteritis, a dangerous inflammation of facial arteries.
Severe belly pains.
Brief loss of vision in one eye. This is a possible sign of arterial blockage, threatening a major stroke. White patch on the lip or in the mouth. A lumpy white patch could be an early sign of oral cancer. With any of these symptoms, remember that early detection can boost your chance of recovery if a serious condition is diagnosed.