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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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Thyroid conditions may make getting pregnant impossible.
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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.