Paget's disease of bone causes affected bones to become enlarged and misshapen. Our bones are living tissue, and our bodies are constantly... Parkinson's disease belongs to a group of conditions called movement disorders. The four main symptoms are... Pertussis, or whooping cough, is a highly contagious disease involving the respiratory tract. It is caused by a bacterium that is found in the... Peyronie's DiseasePeyronie’s disease is characterized by a plaque, or hard lump, that forms within the penis. The plaque, a flat plate of scar tissue, develops on the top or bottom side of... Pinworms are white, parasitic worms that can live in the large intestine of humans. They are about one-half inch long. Pneumonia is a lung disease. Pneumococcal pneumonia can infect the upper respiratory tract and can spread to the blood, lungs, middle ear, or nervous system. Polio is a viral disease which may affect the central nervous system. Since polio immunization has become widespread, cases of polio are very rare.
The body is made up of many types of cells. Normally, cells grow, divide, and produce more cells as needed to keep the body healthy and functioning properly. Sometimes, however, the process goes wrong... Psittacosis is an infectious disease usually transmitted to humans from birds in the parrot family, turkeys and pigeons. It is caused by a bacteria called Chlamydia psittaci. Psoriasis is a chronic (long-lasting) skin disease of scaling and inflammation that affects 2 to 2.6 percent of the United States population, or between 5.8 and 7.5 million people. Although the disease occurs in...
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