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The human immunodeficiency virus (HIV) attacks the body’s immune system. A healthy immune system is what keeps you from getting… HIV When first infected with HIV, you may not experience any symptoms. More often, though, you’ll have flu-like symptoms, including: Fever Headache Fatigue Swollen lymph…

Prostatitis is an inflammation of the prostate gland that happens when the tissue becomes swollen an irritated… with your prostate or urinary tract. If you have any of these symptoms, contact your doctor: Difficult or painful urination Frequent urination Fever Lower back pain Pain in…

Acute bronchitis is a contagious viral infection that causes inflammation of the bronchial tubes (the airways that carry air into… bronchitis can include: Chest congestion or tightness Cough that brings up clear, yellow, or green mucus Shortness of breath Wheezing Sore throat Fever Chills Body…

Reactive arthritis occurs when your immune system reacts to an infection somewhere else in your body. It can affect your… may feel pain or burning when you urinate. You also may have discharge from your penis or vagina. Other symptoms may include: Fever Stomach pain Diarrhea…

Pneumonia is an infection of the lungs. How serious it is depends on what caused the pneumonia, your age, and… type of pneumonia you have. Common symptoms are similar to the symptoms caused by a cold or the flu. They include: cough fever bringing up…

Rotavirus is a highly contagious infection commonly affecting babies and young children. A rotavirus vaccine offers some, but not full,… get the disease, but their symptoms usually aren’t as severe. What are the symptoms of rotavirus? Symptoms include watery diarrhea, vomiting, fever, and stomach pain…

Zika is a virus caused by a bite from the Aedes mosquito. It is contagious and increases the risk of… What is zika? Zika is a virus caused by a bite from the Aedes mosquito. If you have the Zika virus, you can pass…

Bronchiolitis is a common lung infection in infants and young children. It is usually caused by a virus. RSV is… What is bronchiolitis? Bronchiolitis is a common lung infection in infants and young children. It happens when the smallest air passages in the lungs…

Methicillin-resistant Staphylococcus aureus, or MRSA, is a bacterial infection of the skin that can cause bumps, swelling and pain and… What is methicillin-resistant Staphylococcus aureus (MRSA)? Methicillin-resistant Staphylococcus aureus (commonly known as MRSA) is a subset of bacterial (staph) infection of the skin. Staph is…

Echinococcosis is a parasitic infection that is spread from animals to humans. The disease causes cysts and can be… What is echinococcosis? Echinococcosis is a type of infection caused by parasites. It occurs when you eat food or water that is contaminated with eggs…

West Nile virus is an infectious disease that can cause flu-like symptoms. It’s usually spread by infected mosquitos… What is West Nile virus? West Nile virus is an infectious disease that can cause flu-like symptoms. It’s usually spread by infected mosquitos. It first appeared in the…

Crohn’s disease is an inflammatory bowel disease (IBD) that causes ulcers to form in the gastrointestinal (GI) tract anywhere from… What is Crohn’s disease? Crohn’s disease is an inflammatory bowel disease (IBD) that causes ulcers to form in the gastrointestinal (GI) tract anywhere from the…

Mpox (monkeypox) began making the news following a surge in new cases in summer 2022. This outbreak includes reports of… Mpox (monkeypox) began making the news following a surge in new cases in summer 2022. This outbreak includes reports of cases in several countries where…

Eczema and atopic dermatitis are rash-like skin conditions common in babies but can continue in adulthood… What is eczema and atopic dermatitis? Eczema is a general term for rash-like skin conditions. The most common type of eczema is called atopic dermatitis. Eczema is often…

Rheumatoid arthritis (RA) is a chronic (lasting) inflammatory disorder. It causes swelling and pain in the lining of your… What is rheumatoid arthritis? Rheumatoid arthritis (RA) is a chronic (lasting) inflammatory disorder. It causes swelling and pain in the lining of your joints. It can affect…

Shingles is a painful skin rash. It is also called zoster or herpes zoster. It is caused by the same… What is shingles? Shingles is a painful skin rash. It is also called zoster or herpes zoster. It is caused by the varicella zoster…