Malaria: symptoms, testing and treatment in Nigeria
Malaria is one of the most familiar illnesses in Nigeria, and one of the most misunderstood. Almost everyone has had it, or knows someone who has. The trouble is that this familiarity makes people treat it casually. Fever is assumed to be malaria, tablets are bought over the counter without testing, and a condition that needs a proper diagnosis gets managed by guesswork.
Malaria is a serious infection, but it is also treatable, and the difference between a mild case and a dangerous one often comes down to how quickly it is recognised and treated correctly. This article explains what malaria is, why testing before treatment matters, how it is treated, and the signs that mean someone needs urgent care.
What causes malaria
Malaria is caused by a parasite called Plasmodium, spread by the bite of an infected female Anopheles mosquito. The mosquito usually bites between dusk and dawn, which is why sleeping under a treated net is protective. When the parasite enters the blood, it infects red blood cells and multiplies, causing fever and the other symptoms of malaria.
The most dangerous species in Nigeria is Plasmodium falciparum, which is capable of causing severe disease and, if untreated, death. Children under five and pregnant women are the groups most at risk of severe illness. People with weakened immunity, and those who have moved away from a malaria area and lost some of their acquired protection, can also become seriously ill.
Symptoms
Malaria usually causes fever, often with chills and shivering, headache, body aches, and general weakness. Nausea, vomiting, and loss of appetite are common. In young children, malaria can also cause irritability, poor feeding, and drowsiness. Some people develop a cough, which is easily mistaken for a chest infection.
It is important to know that these symptoms are not unique to malaria. Typhoid fever, other infections, and viral illnesses can look very similar. That is exactly why testing is central: the symptoms alone cannot tell you whether it is malaria.
Test before you treat
Nigeria follows a "test and treat" approach, which is also the international standard. Every person suspected of having malaria should have a parasitological test before being treated. The two recommended tests are the rapid diagnostic test, a drop of blood on a small strip that gives a result within minutes, and microscopy, where a trained person examines blood under a microscope. Rapid tests are available at all levels of care, including at community level.
Testing matters for several reasons. First, it confirms the diagnosis, so that a fever caused by something else is not treated as malaria while the real problem is missed. Second, it prevents unnecessary use of antimalarial medicines, which wastes money and encourages resistance. And third, it protects you: if your test is negative, your doctor can look for the actual cause rather than sending you home with the wrong tablets.
Because rapid tests and microscopy are not perfect in every setting, and because the picture can change if you become sicker, a negative test does not always settle the question. If your symptoms worsen, tell your doctor so the diagnosis can be reconsidered.
Treatment
Confirmed, uncomplicated malaria is treated with artemisinin-based combination therapy, known as ACT. This is a combination of medicines, taken as a full course and completed exactly as prescribed, even after the fever settles. Starting treatment promptly matters; therapy should begin as soon as possible after a positive test rather than being delayed.
Do not buy antimalarials over the counter on the basis of a fever alone, and do not take a partial course or share medicine with a family member. Never treat yourself on the strength of a previous episode. Each fever deserves its own assessment, because the correct treatment depends on the test result and the person.
Severe malaria is a different matter. It needs to be treated in hospital, usually with injectable medicines, because a person with severe malaria needs close monitoring and support. Recognising the signs of severity, listed below, is what gets someone to hospital in time.
Malaria in pregnancy is a particular concern. It can be more severe in the mother and can affect the baby, including causing anaemia and low birth weight. Pregnant women should attend antenatal care, where preventive treatment for malaria in pregnancy is offered, and should report any fever promptly.
Severe malaria is a medical emergency, and it can worsen very fast, especially in children. Go to a hospital immediately, or call for help, if a person with fever or suspected malaria has:
- Convulsions or a seizure.
- Confusion, drowsiness, or difficulty staying awake, or a child who is unusually floppy or unresponsive.
- Difficulty breathing or fast, laboured breathing.
- Dark, cola-coloured urine, or passing very little urine.
- Severe pallor, meaning the palms, lips or inner eyelids look unusually pale.
- Persistent vomiting, so that medicines cannot be kept down.
- A very high fever that is not responding, or a fever with a stiff neck or a rash that does not fade under pressure.
- In pregnancy: fever, a severe headache, blurring of vision, swelling of the face and hands, or reduced baby movements.
In babies and children under five, do not wait if the child is not feeding, is unusually sleepy, or is breathing fast. Take them to be seen now.
Prevention
Prevention is where Nigeria can change the story of malaria. Sleeping under an insecticide-treated net every night, not only during the rainy season, is the most effective household measure for most families. The net must be used properly, tucked in, and in good condition.
Where mosquitoes breed, reducing stagnant water around the home helps. Clearing bushes near the house and keeping surroundings tidy is useful, though spraying indoors should follow health authority guidance. Pregnant women should take the preventive treatment offered at antenatal clinics. Children in some areas are offered preventive antimalarial treatment during the rainy season, as advised by local health services. Ask at your clinic what applies where you live.
If you travel outside a malaria area for a long period and return, remember your protection against severe malaria is lower. Fever after such travel should be taken seriously and tested promptly.
Frequently asked questions
Can I have malaria without fever? Fever is the usual signal, but some people, especially those with partial immunity, can carry the parasite with few symptoms. That is one reason testing matters when malaria is suspected.
Do I need to test if I am sure it is malaria? Yes. When you are sure is exactly when it is easiest to be wrong. Test before treating.
Is one negative test the end of it? Not always. If you are getting worse, or if your doctor has reason to be concerned, the diagnosis should be revisited.
Next steps
If you or your child has a fever, get tested before taking any antimalarial. If the test is positive, complete the full course prescribed for you. If you are pregnant, or caring for a child under five, be quick to seek care and do not wait to see whether the fever settles. Use your treated net every night, and ask your clinic about preventive measures for your family. If any of the urgent signs above are present, go to a hospital now.
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