The cause of muscle cramps isn't always known. Muscle cramps may be brought on by many conditions or activities, such as: 1  Exercising, injury, or overuse of muscles. 2  Pregnancy. 3  Cramps may occur because of decreased amounts of minerals, such as calcium and magnesium, especially in the later months of pregnancy.
Putting fingers, cotton swabs or other objects in your ears also can lead to swimmer's ear by damaging the thin layer of skin lining your ear canal. Swimmer's ear is also known as otitis externa. The most common cause of this infection is bacteria invading the skin inside your ear canal. Usually you can treat swimmer's ear with eardrops. Prompt treatment can help prevent complications and more-serious infections.
(Redirected from Otitis Externa). Otitis externa (also known as external otitis and swimmer's ear) is an inflammation of the outer ear and ear canal. Along with otitis media, external otitis is one of the two human conditions commonly called  earache .Redirected from Otitis Externa). Otitis externa (also known as external otitis and swimmer's ear) is an inflammation of the outer ear and ear canal. Along with otitis media, external otitis is one of the two human conditions commonly called  earache .