Persistent fever
Fever that persists longer than expected for an acute infectious disease. No precise threshold exists, and the clinical interpretation of fever is context-dependent, but as a rule of thumb, this term refers to fever that persists longer than 2-3 weeks.
What is Persistent fever?
Persistent fever is a symptom that people may experience for many reasons. It can be related to infections, chronic conditions, injuries, medication effects, or other health changes. The presence of this symptom alone does not diagnose any condition.
If you have Persistent fever that is severe, persistent, or accompanied by other warning signs, contact a qualified healthcare provider.
Possible conditions associated with Persistent fever
The following conditions have been associated with Persistent fever. Only a health professional can determine the underlying cause.
Mitochondrial complex IV deficiency, nuclear type 2
Mitochondrial complex IV deficiency, nuclear type 2 is a medical condition that may be associated with various symptoms ...
Omenn syndrome
An inflammatory condition characterized by erythroderma, desquamation, alopecia, chronic diarrhea, failure to thrive, ly...
Wiskott-Aldrich syndrome
Wiskott-Aldrich syndrome (WAS) is a primary immunodeficiency disease characterized by microthrombocytopenia, eczema, inf...
immunodeficiency 91 and hyperinflammation
An autosomal recessive immunodeficiency caused by a variation in the ZNFX1 gene, characterized by severe infections by b...
Related symptoms
When to seek medical care
Seek urgent care if Persistent fever is severe, sudden, or occurs with chest pain, difficulty breathing, confusion, severe weakness, or other serious symptoms.