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Malaria: signs to watch and when to see a doctor

15 September 2026 · 4 min read · Renewed Health medical team

Malaria is one of the most common reasons people in Lagos visit a clinic. It is caused by a parasite spread by the bite of an infected mosquito. It can be treated, but it can also become serious very quickly, especially in young children and pregnant women.

Common signs

  • Fever, often with chills and sweating
  • Headache and body aches
  • Weakness and unusual tiredness
  • Nausea, vomiting or loss of appetite

Many other illnesses cause the same symptoms, so a fever alone does not prove that it is malaria.

Why testing matters

Please do not buy malaria drugs without a test. A simple blood test tells us whether malaria is the cause. If it is not, treating for malaria wastes money and delays the right treatment. If it is, the right medicine at the right dose, taken to the end, clears the infection and lowers the risk of it coming back.

Go to a hospital quickly if you notice

  • Fits (convulsions) or fainting
  • Extreme sleepiness or confusion
  • Repeated vomiting so that medicine cannot stay down
  • Fast or difficult breathing
  • Very pale skin, yellow eyes or dark urine
  • Fever in a baby, or in a woman who is pregnant

If any of these happen, call us straight away and come in. Do not wait for the next day.

Protect your home

  • Sleep under an insecticide-treated net every night
  • Fit window and door nets where you can
  • Clear stagnant water, blocked gutters and old containers around the house
  • Keep grass short and bins covered
  • Wear light clothing that covers arms and legs in the evening

Pregnancy and young children

Malaria in pregnancy can harm both mother and baby. Pregnant women should attend antenatal care and follow the preventive advice their doctor gives. Children under five should be tested promptly whenever they have a fever.

If you are worried about a fever, our team is here to test, treat and advise. Book an appointment or call us.

This article is general health information. It does not replace advice from a doctor who has examined you.
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