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Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

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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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The familiar sounds of your heart are made by the heart's valves as they open and close.

On average, the ratio of carbon to nitrogen is much higher in terrestrial plants than in other major On average, the ratio of carbon to nitrogen is much higher in terrestrial plants than in other major
Diagram of the general anatomy of a male cat Diagram of the general anatomy of a male cat
Intaglio printmaking technique, general view. Intaglio printmaking technique, general view.
The limbic system is located within the higher brain, or cerebrum. The limbic system is located within the higher brain, or cerebrum.
Two general classes of symmetry Two general classes of symmetry
What is the volume of 19.6 g of a liquid that has a density of 0.967 g/mL? What is the volume of 19.6 g of a liquid that has a density of 0.967 g/mL?
Video: Types of synapses - electrical & chemical

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