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- Causes of FUO can be categorized as any of the following: infection: tuberculosis, mononucleosis, Lyme disease, cat scratch fever, endocarditis, and others inflammation: lupus, rheumatoid arthritis, inflammatory bowel disease, and others malignancy: lymphoma, leukemia, pancreatic carcinoma, and other cancers and sarcomas
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An unexplained fever that comes and goes may be a sign of autoinflammatory disease. Find out how these rare conditions compare to more common autoimmune disorders. Health Essentials
- You have a fever. A fever is a key sign that rash should be looked at by a doctor. It could be a sign of an allergic reaction. A fever along with your rash could also indicate an infection such as
- The rash is spreading. A rash that is spreading is another sign it’s time to seek medical care. A rash that is spreading quickly might be a medical emergency.
- The rash area hurts. A painful rash should be looked at by a medical professional. It could be infected or a sign of conditions such as shingles. It’s best to also keep an eye on any rash that isn’t painful but that is tender when you press on it.
- The rash came on suddenly. A rash that comes suddenly may be an allergic reaction to a medication. Sometimes, a rash can develop in the first few weeks after you start a new medication.
Types. Causes. Symptoms. Tests. Treatment. In children. Outlook. A fever of unknown origin (FUO) is a fever of at least 101°F (38.3°C) that lasts for more than three weeks or occurs...
May 7, 2022 · A fever is usually caused by an infection. For most children and adults, a fever may be uncomfortable. But it usually isn't a cause for concern. For infants, however, even a low fever may mean there's a serious infection. Fevers generally go away within a few days. A number of over-the-counter medications lower a fever.
Nov 16, 2023 · If their fever comes with rash, real discomfort, irritability, low energy, headache, stiff neck, or repeated diarrhea or vomiting. Their fever is higher than 104 F, which can cause a...
May 22, 2023 · stiff neck. trouble breathing. severe pain anywhere in the body. swelling or inflammation of any part of the body. vaginal discharge that is discolored or smells bad. pain when urinating or urine that smells bad. Causes of fever. An infection, such as the flu, is the most common cause of fever. Other conditions can also cause a fever.
Jul 15, 2014 · Common causes of FUO are listed in Table 2. 6, 15 – 23 Typical subgroups used in the differential for classical FUO are infection (20% to 40%), malignancy (20% to 30%), noninfectious inflammatory...