Electrical outlets and switches are so ordinary that you barely notice them until something goes wrong. Yet the earliest ...

It's better to be safe than sorry, but some signs are downright terrifying. Especially when they announce unpredictable hazards from which we'd like to stay as far away as possible.

Here are warning signs to look out for according to Dr. Ajaykumar D. Rao the chief of the section of Endocrinology, Diabetes and Metabolism at the Lewis Katz School of Medicine at Temple University.