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366 Possible Causes for Confusion, Rigors and Chills

  • Urinary Tract Infection

    Acute confusion is a common symptom of physical illness in the older patient. In the majority, it is transient and resolves on treatment of precipitants.[ncbi.nlm.nih.gov] Signs of pyelonephritis may include: A high fever (over 100.4 degrees) Body chills Rigors (shivering and sweating accompanied by a rise in temperature) Nausea or vomiting[verywell.com] Some older adults with a UTI also develop confusion. The tricky part Some of these UTI symptoms are similar to the symptoms of other conditions common in older people.[health.harvard.edu]

  • Pneumonia

    The clinical history of pneumonia may include one or more of: Pleuritic chest pain Shortness of breath Cough Production of sputum Rigors or night sweats Confusion.[bmj.com] Symptoms and signs include malaise, fever, chills, rigor, cough, dyspnea, and chest pain.[msdmanuals.com] Initial mild headache and myalgia leading to high fever, chills and repeated rigors; non-chest symptoms often predominate early on.[patient.info]

  • Heart Failure

    In addition, the confusion of similar terms with HFpEF, such as diastolic heart failure, and diastolic dysfunction (DD), has led to a misunderstanding of the true scope of[ncbi.nlm.nih.gov] Symptoms include fever, chills, rigors, dyspnea, wheezing, chest pain or tightness, headache, nausea, vomiting, and diarrhea.[doi.org] The term ‘failure’ can be confusing – the heart does not actually stop pumping.[gosh.nhs.uk]

  • Congestive Heart Failure

    Depressive symptoms, however, sometimes are confused with the physical repercussions of heart failure.[ncbi.nlm.nih.gov] Symptoms include fever, chills, rigors, dyspnea, wheezing, chest pain or tightness, headache, nausea, vomiting, and diarrhea.[doi.org] Symptoms of heart failure Some of the most common symptoms you may experience are reduced energy, confusion, chest pain, shortness of breath and swelling in the legs.[novanthealth.org]

  • Chronic Fatigue Syndrome

    […] any four of a number of characteristic symptoms, defined as mild fever, sore throat, tender lymph nodes, muscle pain and weakness, joint pain, headache, sleep disorders, confusion[britannica.com] Severe chills with violent shivering are called rigors.[en.wikipedia.org] For centuries its confusing array of features has been attributed to numerous environmental, metabolic, infectious, immunologic, and psychiatric disturbances.[ncbi.nlm.nih.gov]

  • Acute Respiratory Distress Syndrome

    Symptoms of ARDS Symptoms of ARDS can include: severe shortness of breath rapid, shallow breathing tiredness, drowsiness or confusion feeling faint When to get urgent medical[nhs.uk] […] and rigor since five days.[ncbi.nlm.nih.gov] There may also be signs, such as confusion or low blood pressure, that the vital organs aren't getting enough oxygen.[columbiasurgery.org]

  • Pneumococcal Pneumonia

    The disease may begin quickly, with: Fever and chills Cough Chest Pain Rapid breathing or difficulty breathing Older adults with pneumococcal pneumonia may experience confusion[oakgov.com] Symptoms generally include an abrupt onset of fever and chills or rigors. Typically, there is a single rigor, and repeated shaking chills are uncommon.[cdc.gov] They can include fever, cough, shortness of breath, chest pain, stiff neck, confusion and disorientation, sensitivity to light, joint pain, chills, ear pain, sleeplessness[wwwnc.cdc.gov]

  • Meningitis

    Other symptoms are nausea, vomiting, inability to look bright lights, confusion, irritability and confusion. In babies, there will be a characteristic high-pitched cry.[symptoma.com] , rigors, weakness, malaise, restlessness, apprehension, myalgias, arthralgias, and fever.[ncbi.nlm.nih.gov] CASE SUMMARY: We discuss the case of a 56-year-old white man with a history of rheumatoid arthritis and hypertension who became confused, nauseated, and began to vomit within[ncbi.nlm.nih.gov]

  • Gram-Negative Septicaemia

    Sepsis eventually may begin to affect organ function, causing symptoms of mental confusion or impaired kidney function.[wisegeekhealth.com] Clinical features suggesting the possibility of bacterial contamination and/or endotoxin reaction may include rigors, high fever, severe chills, hypotension, tachycardia,[transfusion.com.au] However, bacteremia means the presence of bacteria in the blood; this can occur without any of the criteria listed above and should not be confused with sepsis.[medicinenet.com]

  • Hyperpyrexia

    We observed a patient who, during the administration of intravenous cimetidine, became hyperpyretic and confused.[ncbi.nlm.nih.gov] Fever with rigors Hyperpyrexia NOS Persistent fever Pyrexia NOS[icd10data.com] The patient presented with a 2-week history of fever and increasing confusion, in the context of a number of changes to his medication regimen.[ncbi.nlm.nih.gov]

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