Cramps are caused by muscle spasms, when the muscles are deprived of oxygen or contracted by exertion, it will lead to cramps and at the same time will produce localized pain. However, the pain does not last too long, and the symptoms will be relieved in a matter of minutes. There are many reasons for this symptom. For people after 50 years of age and growing adolescents, frequent cramps are considered to be caused by calcium deficiency. This condition will be relieved by taking foods high in calcium by mouth and calcium tablets. Outdoor workers and athletes who start exercising after exertion or without warming up can also suffer from cramps due to overexertion. Cold and chill can also cause cramps, so a clear diagnosis and symptomatic treatment can provide good results. Severe diarrhea can also lead to ionic disorders, and when serum calcium is severely reduced, cramps can occur and require timely rehydration.