The symptoms vary enormously between people with myasthenia gravis: 1  The muscles around the eyes are most commonly affected first, as these are constantly used and can quickly tire. 2  Muscles around the face and throat are also often affected. 3  Weakness in the arms, hands, fingers, legs and neck may develop.
In its most general form, a nipple is a structure from which a fluid emanates. More specifically, it is the projection on the breasts or udder of a mammal by which, in females, breast milk is delivered to a mother's young.
Glands in the areola help lubricate the breast during nursing. Jogger's nipple may occur when the areola is irritated by clothing during jogging. Areola refers to the circular, pigmented area surrounding the human nipple. Some diseases can occur that are specific to the areola and nipple.