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.
Causes of Otitis externa. Causes of Otitis externa. Otitis externa is caused by a bacterial or viral infection in the external part of the ear canal. A common bacterial pathogen is Pseudomonas aeruginosa. List of causes of Otitis externa. Otitis externa Causes: Risk Factors.
beach ear otitis externa caused by irritation from ocean water and other beach conditions. cauliflower ear a thickened and deformed ear caused by accumulation of fluid and blood clots in the tissue after repeated injury; it is most often seen in boxers, for whom it is almost an occupational hazard.