High blood pressure symptoms, signs and risks. High blood pressure, or hypertension, doesnât usually cause any obvious symptoms. The British Heart Foundation estimates that up to 5 million people in the UK have undiagnosed high blood pressure. Left untreated, hypertension can lead to serious diseases, including stroke, heart disease, kidney failure and eye problems.
Quick Answer. The northern ringneck snake is a bluish-black snake that grows to approximately 2 feet in length and lives throughout a sizable portion of North America. The morphology of the ringneck snake varies slightly in terms of coloration, with olive and brown varieties living in certain areas. Continue Reading.
Ring-necked snake (Diadophis punctatus) â A small grey snake (up to 20 inches) with orange to yellow belly and a yellow or orange ring around its neck. 3. Garter snake (Thamnophis sirtalis) â A greenish or brown snake covered in checkered spots, and a yellow to white line down its back. Grows up to 48 inches long.