What Causes Chills? Common & Serious Causes Explained
Chills can be caused by Sepsis, Influenza (Flu), Infective Endocarditis and other conditions. Learn which causes are serious, which are benign, and when to seek urgent medical evaluation.
Updated March 27, 2026
Chills has multiple causes, ranging from benign to serious. The most common include Sepsis, Influenza (Flu), Infective Endocarditis. Sepsis is a life-threatening systemic response to infection causing organ dysfunction. It is identified by abnormal temperature, heart rate, breathing, and altered mental status; prompt antibiotic treatment and fluid resuscitation are essential.
Clinical Context
The causes of chills range from benign to serious. Identifying the underlying cause requires clinical evaluation. Common causes include Sepsis, Influenza (Flu), Infective Endocarditis, Malaria, and others.
Clinical Pathway
Chills — Symptom HubSymptomSepsis — Full Condition GuidePrimary CauseSepsis — Differential DiagnosisDifferentialBacterial Meningitis vs. Sepsis — Comparisonvs.Influenza (Flu) — Full Condition GuideCauseInfective Endocarditis — Full Condition GuideCauseMalaria — Full Condition GuideCauseFrequently Asked Questions
Why do I have chills? common & serious causes explained?+
Chills has multiple causes, ranging from benign to serious. The most common include Sepsis, Influenza (Flu), Infective Endocarditis. Sepsis is a life-threatening systemic response to infection causing organ dysfunction. It is identified by abnormal temperature, heart rate, breathing, and altered mental status; prompt antibiotic treatment and fluid resuscitation are essential.
What is the most common cause of chills?+
Common causes include Sepsis, Influenza (Flu), Infective Endocarditis. The most likely cause depends on age, associated symptoms, and medical history.
When is chills dangerous?+
Seek medical attention if chills is persistent, worsening, sudden in onset, or accompanied by other concerning symptoms.
Can chills be caused by stress or anxiety?+
Yes — psychological stress can contribute to many physical symptoms, but organic causes should be excluded by a healthcare provider.
Our AI Symptom Checker analyzes your symptoms and suggests possible conditions based on clinical guidelines.
Start Free Analysis →