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  • Nipple Discharge

    When you are not breastfeeding, fluid leaking from one or both nipples is called nipple discharge. It may or may not be a sign of a medical problem. Two types of nipple discharge are: Nonspontaneous discharge. This occurs only when you press on your nipple. It is usually normal and...

  • HIV: Preventing Infections

    In most cases, HIV causes only a few weeks of flu-like symptoms. But if HIV isn't treated, you're more likely to get sick with opportunistic infections. HIV weakens your immune system so it can't fight off these infections. Preventing opportunistic infections is an important part of caring for yourself when...

  • Pneumocystis Pneumonia and AIDS

    Pneumocystis is a fungus that can sometimes cause pneumonia in people who have AIDS. Pneumonia is an infection of the lungs. Pneumonia caused by pneumocystis can make it hard to breathe and to get enough oxygen into the blood. Pneumocystis pneumonia, or PCP, is the most common serious infection in...

  • HIV: Antiretroviral Therapy (ART)

    Antiretroviral therapy (ART) is the combination of several antiretroviral medicines used to slow the rate at which HIV makes copies of itself (multiplies) in the body. A combination of three or more antiretroviral medicines is more effective than using just one medicine (monotherapy) to treat HIV. The use of three...

  • Opportunistic Infections in HIV

    Opportunistic infections and diseases occur in people whose immune systems have been weakened by a disease such as HIV infection. Opportunistic infections that are common in people who have AIDS include pneumonia, tuberculosis, and toxoplasmosis. People who have AIDS are also more likely to develop cancers such as...

  • HIV: Taking Antiretroviral Medicines

    Learn how to take antiretroviral medicines safely.

  • Black Widow Spider Bite

    What is a black widow spider? Black widow spiders (Latrodectus mactans and Latrodectus hesperus) are found throughout the United States, Mexico, and southern Canada. A female black widow is much more likely to deliver more venom than a male spider. Female black widows are long-legged, shiny, coal-black spiders with an...

  • Brown Recluse Spider Bite

    What is a brown recluse spider? Brown recluse, violin, or fiddleback (Loxosceles) spiders are about 0.5 in. (1.3 cm) long with a dark violin-shaped mark on the combined head and midsection (cephalothorax). They are found most often in the south-central part of the United States and live in hot, dry,...

  • Scorpion Stings

    What is a scorpion? Scorpions, found mostly across the southern and western United States, are up to 3 in. (7.6 cm) in length. They have eight legs and a pair of pincers like a crab has. The stinger, which injects venom, is located at the end of a narrow tail...

  • Puss Caterpillar Stings

    What is a puss caterpillar? How can it harm you? The puss caterpillar, or woolly slug, is the most poisonous caterpillar in the United States. Its poison is hidden in hollow spines among its hairs. This hairy caterpillar is found in the southern states, ranging west through most of Texas...


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