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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
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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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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
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More than 4.4billion prescriptions were dispensed within the United States in 2016.
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Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.