Find an Ophthalmologist. Dark spots can refer to blind spots or to shadows moving across vision cast by specks floating in the eye. The symptoms and possible related eye conditions/diseases in this section are for general reference only, and do not contain all visual symptoms or all possible related conditions or diseases.
A boil is a red, swollen, painful bump under the skin. It often looks like an overgrown pimple. Boils are often caused by infected hair follicles. Bacteria from the infection form an abscess, or pocket of pus. A boil can become large and cause severe pain. Boils most often happen where there is hair and rubbing.
Recognize the kind of boils. When you notice the symptoms of a boil, you may need to figure out which boil you have. A boil is a common form of a medical condition called an abscess which is a collection of pus underneath the dermis (the layer of skin under the epidermis). There are a number of different types of boils that may appear.