Chills and fatigue may be symptoms of viral or bacterial gastroenteritis, influenza, sinusitis, pneumonia or meningitis, according to Healthline. People with chills and fatigue may also be suffering from malaria, strep throat or urinary tract infections. Chills can also occur when exposed to cold temperatures.
Individuals who are fatigued for more than 24 hours, have difficulty sleeping, and experience muscle pain and aches as well as chills may be suffering from chronic fatigue syndrome, explains the U.S. Department of Health and Human Services' Office on Women's Health. Chronic fatigue syndrome can also produce headaches, sore throats, tender lymph nodes, and dizzy or fainting spells.
People with chills and fatigue accompanied by shortness of breath, a stiff neck, severe coughing, abdominal pain and painful urination should consult with a medical professional, suggests Healthline. Treatment for chills and fatigue include covering the body with a light sheet to raise the body temperature or sponging off with lukewarm water. Over-the-counter medications such as ibuprofen, acetaminophen and aspirin help to fight chills. Patients should consult with a physician when taking over-the-counter medications for chills and fatigue, especially when symptoms do not improve after 48 hours. Symptoms that persist may require additional testing, such as blood tests, sputum cultures or a urinalysis and chest X-ray to determine if an infection is present.