Malaria prevention
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Malaria prevention: Essentials
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What are the symptoms of malaria?

If you get malaria, you may feel as though you have the flu. The most common symptom is fever (a high temperature). If you don't get treated quickly, you may get delirious and have seizures. You may first get symptoms months after you were infected.

The time between getting infected with the parasite and the first symptoms varies a lot. It might take only a week, or it might take as long as 18 months. But you will probably get symptoms within three months.

You should see a doctor if you get a feverish illness after traveling to a malaria area, especially if you were there less than three months ago.

The symptoms of malaria vary. They depend on what sort of malaria parasite is infecting you.
 
 
 
 
 
Source:
Pasvol V.
Malaria.
In: Cohen J, Powderly WG (editors). Infectious diseases. 2nd edition. Mosby, London, UK; 2004.
 
 
 
 
 
1 But you will probably get a spiking fever. This means your temperature suddenly goes up for a few hours. Then it falls again for several hours. This may happen every few hours.

You may also have one or more of these symptoms:
 
 
 
 
 
Source:
Jong EC, McMullen R.
The travel and tropical medicine manual.
Saunders, Philadelphia, U.S.A.; 2003.
 
 
 
 
 
2
 
 
 
 
 
Source:
World Health Organization.
International travel and health.
Available at http://www.who.int/ith/en/index.html (accessed on 17 December 2008).
 
 
 
 
 
3

  • Chills, when you suddenly feel cold and shivery
  • Headache
  • Muscles aching and feeling weak
  • Vomiting
  • Diarrhea
  • Cough
  • Pain in your abdomen.
If you don't get treatment, malaria can make you delirious. This means you get confused and overexcited. If you have the more severe types of malaria, you might have seizures or fall into a coma.

You are more likely to get malaria and have more serious symptoms if you are pregnant. You may have a
 
 
 
 
 
miscarriage
A miscarriage is when something happens during a pregnancy so that the fetus does not survive.
 
 
 
 
 
miscarriage.
 
 
 
 
 
Source:
Suh KN, Keystone JS.
Malaria prophylaxis in pregnancy and children.
Infectious Disease and Clinical Practice. 1996; 5: 541-546.
 
 
 
 
 
4 Doctors advise women who are pregnant not to travel to places where there is malaria.

Your doctor can diagnose malaria by putting a small drop of your blood onto a strip of test paper. The doctor will also send a sample of your blood to a laboratory to be examined under a microscope. If you have malaria, this will show what type it is.

Sources for the information on this page:
  1. Pasvol V.Malaria.In: Cohen J, Powderly WG (editors). Infectious diseases. 2nd edition. Mosby, London, UK; 2004.
  2. Jong EC, McMullen R.The travel and tropical medicine manual.Saunders, Philadelphia, U.S.A.; 2003.
  3. World Health Organization.International travel and health.Available at http://www.who.int/ith/en/index.html (accessed on 17 December 2008).
  4. Suh KN, Keystone JS.Malaria prophylaxis in pregnancy and children.Infectious Disease and Clinical Practice. 1996; 5: 541-546.
This information was last updated on May 11, 2009
BMJ Group
This information is for educational use only, and is not a substitute for prompt professional medical advice. Readers should always consult a physician or other professional for advice and treatment.
© BMJ Publishing Group Limited 2009. All rights reserved.
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