Severe Body Aches and Chills: What to Know

Chills can happen as the body adjusts its temperature, while inflammation can make muscles and joints feel sore. Influenza and COVID-19 can cause a sudden combination of aches, chills, tiredness, cough, or a sore throat. Malaria may cause repeated fever and chills after exposure in a malaria-risk area. Dengue fever can bring marked muscle and joint pain, headache, and fever. Brucellosis is another infection to discuss if you have had contact with infected animals or unpasteurised dairy products. Longer-lasting aches without an acute illness may need assessment for fibromyalgia, hypothyroidism, or Long COVID.

Rest, drink fluids regularly, and keep a record of your temperature and when the chills or aches occur. Wear light layers so you can adjust as your temperature changes. Follow the label for any suitable pain or fever medicine, and check with a pharmacist if you have liver or kidney disease, take other medicines, or are pregnant. Avoid strenuous exercise while you feel acutely unwell. Arrange medical advice if symptoms are severe, do not begin to settle, or follow recent travel.

Seek urgent help for trouble breathing, chest pain, confusion, fainting, a seizure, severe weakness, a stiff neck, or inability to keep fluids down. Get prompt assessment for a new severe headache, unusual bruising or bleeding, a widespread rash, yellowing of the skin, or fever after travel to a malaria-risk area. Children, older adults, pregnant people, and those with weakened immunity may need advice earlier.

Could this pattern fit an infection or a non-infectious cause? Do I need testing because of my travel, animal, food, or household exposures? Which pain or fever medicines are suitable with my health conditions? What changes should prompt urgent review?