MS-DOS resulted from a request in 1981 by IBM for an operating system to use in its IBM PC range of personal computers. Microsoft quickly bought the rights to 86-DOS from Seattle Computer Products, and began work on modifying it to meet IBM's specification.
Complications from whooping cough can include weight loss, loss of bladder control, fainting, rib fractures from severe coughing, and pneumonia. A small percentage of adolescents and adults with whooping cough need to be hospitalized for their illness. In one study, 61% of adults with whooping cough missed work.
Difficulty breathing performing everyday actions or lying down represent the primary pericardial effusion symptom. Sharp pains in chest together with tightness, and chronic dry cough may occur as well. Nausea, dizziness, fainting, troubles with swallowing are the symptoms of fluid accumulation around the heart. People also complain of a low grade fever with pain radiating between the neck, shoulders, chest, abdomen and back.