Many people carry staph bacteria on their skin without symptoms. Symptoms of a MRSA or other staph infection depend on where the infection is located. Infections of the skin are the most common and cause symptoms such as redness, warmth, pus, and a wound that does not heal. Your doctor may refer to these infections as boils, furuncles, impetigo, or abscesses. Infections can also develop in the blood, bone, bladder, lungs, and other sites.

The common symptoms are a severe sore throat with a yellow or white coating on the tonsils. The tonsils or the throat are swollen and red. A throat infection is often accompanied by fever, painful swallowing and swollen lymph glands. When suffering from a persistent sore throat you must consult your doctor. Untreated, infections can lead to problems with heart or kidneys.

Staph bacteria, including MRSA, can cause skin infections that may look like a pimple or boil and can be red, swollen, painful, or have pus or other drainage. More serious infections may cause pneumonia, bloodstream infections, or surgical wound infections.

Unfortunately, Hepatitis often goes undiagnosed because symptoms are mild or suggest only a flu-like illness. Many people have no symptoms at all. The only way to know for sure if you have Hepatitis is to have a blood test. Ask a doctor or needle exchange site where you can get tested, or call the National Hepatitis Hotline at 1-800-465-4837. You are usually safe to get tested within two weeks after potential exposure to know for sure.

The less severe form of Legionella infection is Pontiac Fever, which manifests itself as a self-limiting flu-like illness. The incubation period is remarkably short - in terms of hours to several days - and symptoms will include malaise, muscle aches (myalgia), fever, chills and headache. Patients will, however, typically recover completely within one week. Legionnaires' Disease is the more severe manifestation of Legionella infection.

Most people who are infected with West Nile virus will not have any type of illness. It is estimated that 20% of the people who become infected will develop West Nile fever: mild symptoms, including fever, headache, and body aches, occasionally with a skin rash on the trunk of the body and swollen lymph glands.

Most people who are infected with WNV either have no symptoms or experience mild illness such as fever, headache and body aches before fully recovering. Some persons may develop a mild rash or swollen lymph glands. In some individuals, particularly the elderly, WNV can cause serious disease that affects the brain tissue. At its most serious, it can cause permanent neurological damage and can be fatal.

A yeast infection is a common type of vaginal infection caused mainly by an overgrowth of a fungus called Candida albicans. Candida albicans is often present in the vagina without causing any symptoms Yeast cells are normally present in the vagina but can overgrow if the vaginal environment is disturbed. If the normal pH balance of the vagina changes, the yeast cells can multiply resulting in a vaginal yeast infection. Certain factors may increase the risk of developing a yeast infection.

Once infected with HIV, a person may or may not experience any symptoms. People who do experience symptoms might have a flu-like illness within one or two months after infection. Symptoms can include fever, headache, tiredness and/or enlarged lymph nodes. These symptoms usually disappear within a week to a month and are often mistaken for the symptoms of more common viral infections, like a cold.

Infected dogs can become lethargic as the tapeworm takes food from the dog’s intestinal tract, depleting the dog’s overall nutrition and disrupting normal digestive processes.

See your doctor immediately if you or a family member develops symptoms of high fever, confusion, muscle weakness, and severe headaches. WNV is diagnosed by laboratory tests on blood serum of cerebrospinal fluid. Medical attention is not needed for mosquito bites without symptoms.

The body is made of many systems that work together to provide health, wellness and daily function. When one of these systems is not working together with the others, diseases or a state of illness occurs. The immune system is the "watchdog" of the body. It protects the body from substances that don't belong there. These foreign substances can be bacteria, viruses, or tissue from another person or living thing.

You're coughing and sneezing and tired and achy. You think that you might be getting a cold. Later, when the medicines you've been taking to relieve the symptoms of the common cold are not working and you've now got a terrible headache, you finally drag yourself to the doctor. After listening to your history of symptoms, examining your face and forehead, and perhaps doing a sinus X-ray, the doctor says you have sinusitis.

Because periodontal infection grows under your gums, you can have no symptoms at all. More advanced cases can have some of the following symptoms:

In immunocompromised persons, Cryptosporidium infection causes diarrhea that is usually watery, lasts 1 to 2 weeks and is often accompanied by abdominal cramps, fatigue, nausea, vomiting and low-grade fever. People usually develop symptoms about 5-9 days after ingesting the oocysts. In persons with severely weakened immune systems, cryptosporidiosis can be chronic and severe. The watery diarrhea can be prolonged and debilitating and may be fatal.

Most frequently the symptoms include: itching, vaginal discharge that can be whitish, yellowish, gray or even greenish, unpleasant odor, discomfort or pain in the vulva (the external genital area), burning or discomfort or pain in the vagina (the internal area), at any time but especially during or after intercourse. You may also notice redness or swelling, sometimes you may detect little bumps on the inside of the vaginal lips.