Muscle aches and nausea: what to know

Viral illnesses can produce body aches alongside nausea, fever, tiredness, headache, or respiratory symptoms. Vomiting or diarrhoea can then reduce fluid and salt levels, making cramps and weakness worse. Influenza, COVID-19, Dengue Fever, Malaria, and Brucellosis may present with aches and feeling sick in the right context. Fibromyalgia and Hypothyroidism can cause aching but do not usually explain sudden nausea on their own. Pregnancy, food poisoning, migraine, alcohol, and medicine effects are other possibilities.

Take frequent small sips of water or an oral rehydration drink, and try bland foods when tolerated. Rest and avoid strenuous exercise. Note vomiting, stool changes, urine amount and colour, fever, pain location, recent travel, sick contacts, new foods, and recently started medicines. Do not take someone else’s anti-nausea medicine. A pharmacist or clinician can advise what is suitable for you, especially with pregnancy, kidney disease, or other long-term conditions.

Get urgent help for severe or localised abdominal pain, chest pain, confusion, fainting, stiff neck, trouble breathing, blood in vomit or stool, or a new severe headache. Seek prompt assessment for a high fever, rash, yellow skin, very dark urine, marked weakness, or inability to keep fluids down. Arrange medical advice if symptoms are not settling, recur, or follow travel to an area where mosquito-borne illness occurs.

What features make infection, dehydration, medicine effects, or another cause more likely? Do I need fluid assessment or tests? Which drinks and medicines are safe with my health conditions?