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.
Pimples and boils may have similar appearances, particularly if the boil is just beginning to form. Both pimples and boils may appear red and raised. Over time, boils can become much larger than pimples, however. Boils can even join together and form a carbuncle, which is a cluster of boils that connect and form a single head. Boils and carbuncles are typically very hard and painful, whereas a pimple is not as hard and may or may not cause pain. Loaction. One way to differentiate between boils and pimples is their location. Pimples almost always appear on the face, chest or back, because these are the places where the oil glands become overactive and clog the follicles. Boils, on the other hand, usually form in the armpits, groin, buttocks or on the thighs.