Recurring Malaria

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QUESTION

I had malaria twice when I was 4 and 8 years old. I am 50 years old now but I have severe chills at least once or twice a month, muscle aches, fatigue severe head aches for the past 10-15 years with no apparent cause and my I take head ache medication for migraine (maxalt and excedrim) and my chills and fatigue is getting more frequent. I had no other history of any diseases. Is this symptoms a possible recurrent malaria.

ANSWER

Thanks for your question. One of the most common symptoms of malaria is high fever, which comes in cycles with chills in between. Without fever, it is unlikely that you are suffering from malaria.

However, there are some forms of malaria which can cause relapses. Specifically, Plasmodium vivax and P. ovale can form dormant liver stages which can then re-enter the blood causing a relapse of malaria infection and a recurrence of symptoms. To diagnose malaria in your case, next time you have an episode of chills, go to your doctor and ask for a blood test to check for malaria. S/he will either look at your blood under the microscope or perform a rapid diagnostic test, which tests for malaria-specific proteins, called antigens, in your blood.

In either case, it will tell you whether you have malaria, and which kind. If you have one of the relapsing kinds (P. vivax  or P. ovale) then you may be able to take a course of a drug called primaquine which kills the dormant liver forms of the malaria parasite and thus prevents future relapses. However, people with G6DP deficiency should not take primaquine, so you should be tested for this deficiency prior to taking the drug.

Dangerous

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QUESTION

Why malaria so dangerous?

ANSWER

Malaria can be dangerous for a number of different reasons, some of which relate to each other. First of all, there are five different types of malaria that infect humans, and each varies in terms of its severity and potential for severe consequences. Even within these types, the severity of the disease caused (termed “virulence” by scientists and doctors), can even vary by strain or geography. Generally, the most dangerous form of malaria is caused by Plasmodium falciparum. One reason why this species of malaria is so dangerous is that is replicates very quickly in the blood. This means that infection levels can build up very quickly; if a person infected with P. falciparum does not get diagnosed and treated within a few days of feeling sick, the infection can progress to a point where the disease becomes very severe. This rapid accumulation of infection is also observed with P. knowlesi, a much rarer form of malaria found in south-east Asia. The parasites of P. knowlesi have a 24-hour reproductive cycle in the blood, the quickest for any type of malaria that infects humans. However, P. falciparum also has other characteristics which make it even more dangerous, and which do not occur with P. knowlesi. For example, when P. falciparum infects red blood cells, it causes their shape to change, and makes them “sticky”. This stickiness causes the red blood cells to become lodged in the blood vessels leading in to major organs, in a process known as sequestration. Sequestration creates blockages of these blood vessels, reducing blood flow and resulting in oxygen deprivation. When this process occurs in the blood vessels in the brain, the outcome is known as cerebral malaria, characterised by impaired consciousness, coma and even death. It is this pathology which is associated with most cases of severe malaria, and causes the most number of deaths.

However, if treated promptly with the correct drugs, even P. falciparum malaria is usually easily controlled. Therefore, one of the additional reasons why malaria is so dangerous is that in many places, and particularly sub-Saharan Africa, people do not have access to medication, or not the right types of medication. Many strains of P. falciparum have become resistant to chloroquine, once the first line treatment for malaria, and so this drugs is now ineffective in many cases. Instead, the World Health Organisation recommends now that artemisinin-based combination therapies (ACTs, such as Coartem) should be given as first-line treatment against all uncomplicated malaria, to prevent additional resistance from developing.

Frequent Urination and Malaria

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QUESTION

Can malaria result in frequent urination, especially during night?

ANSWER

Malaria can affect the kidneys, especially malaria caused by P. falciparum. This could result in changes to urination patterns. However, at this stage in the infection, the patient would also be experiencing severe fever, chills and other symptoms associated with malaria. The fever would also likely be causing dehydration if the patient was not taking on sufficient fluids, which would result in less frequent urination.

Can malaria be dormant for years?

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QUESTION

My child (age 5 at time) was bitten by something in Mexico that looked like a mosquito bite. About 7 days later we were home in the US and she developed high fever, headache, chills,sweating at night, extreme fatigue,abdominal pain, and swollen lymph nodes in neck. She had a fever for 40 days! I took her to the pediatrician almost every other day and had immediately informed them of the bite in Mexico and asked if they could test her for malaria. They laughed at me and said that is not high malaria area.

Her wbc was 30,000ish and liver enzymes 1000–tons of other blood work got lost. I had researched and agreed but told them it still exits there even if it is low. So 3 years later she still has swollen lymph nodes in neck that are bigger and now in the axillary and groin area, always sweats in the middle of the night, pale, and very tired. Dr. tells me not to worry about the lymph nodes but it is hard not to. I have bypassed her finally and talked with an infectious disease doctor that suggested we get a lymphnode biopsy. We have an appt w/an hem/onc Dr in 5 days. If they were to biopsy a lymph node could it show Malaria this late or would it have to be the liver or could they do a blood smear this late? She also has had low amounts of myoglobin in her urine for about a year.

ANSWER

I replied to an earlier version of this post—reading your subsequent details, I think it is unlikely that the cause is malaria, but rather an infection or indeed another disorder which would result in elevated WBC and enlarged lymph nodes. A biopsy at this stage would not be able to diagnose malaria—a blood test would only reveal an active, blood-borne infection, which would be associated with high fever and other “typical” malaria symptoms. If your daughter is experiencing these (though fever/sweats at night are not particularly associated with malaria), a blood test could put your mind at rest by eliminating malaria as a cause. However your pediatrician will be better placed to discuss other possible diagnoses which correspond to the symptoms.

Malaria Recovery Time

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QUESTION

How long does it take to recover from malaria?

ANSWER

A number of different factors affect recovery time from malaria. These include the type of malaria, how quickly treatment is administered and the immune status of the patient. For example, children and pregnant women tend to get much more severe cases of malaria, due to their reduced natural immunity. 

The type of malaria will impact on the severity and length of the infection as well—P. falciparum is the most severe kind, and can result quickly in death if not treated promptly, whereas less rapidly progressing forms of malaria, such as P. malariae, may persist for longer but not cause severe disease. For most cases of uncomplicated malaria, once the appropriate form of treatment is started, the patient will start to recover within a couple of days.

Malaria in the Brain

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QUESTION

I would like to know how dangerous is malaria in the brain?

ANSWER

Only a certain kind of malaria, Plasmodium falciparum, is usually associated with causing problems in the brain. The P. falciparum parasite infects red blood cells and changes their surface structure, causing them to become “sticky”. These sticky red blood cells become lodged in the small blood vessels that flow through organs, causing blockages and reducing oxygen flow.

When this process occurs in the brain, the result is called “cerebral malaria”, and can result in impaired consciousness, coma and even death. As such, once malaria-infected blood passes into the brain, it can be very dangerous. Luckily, however, if people are diagnosed promptly and given treatment, it is usually possible to stop the progression of P. falciparum malaria before it enters the brain, allowing for a swift and uncomplicated recovery.

Malaria Muscle Aches

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QUESTION

I am someone who has traveled to malaria-infected areas in the past and will do so again in the future. I also happen to have a form of musculr dystrophy (myotonic dystrophy type II) that, among other things, causes me to experience frequent episodes of muscular pain. Thus, the mere presence of muscle pain, in my particular case, can tell little about whether I might have malaria.

Though I do understand there are several other symptoms to look for, I also would still like to have a better understanding of what malarial muscle aches tend to feel like in the hope that this information could perhaps help me distinguish this particular form of muscle pain from the other muscle pains I already experience. For example, I have also occasionally experienced pulled muscles, or muscles that simply were overused during a recent, too prolonged session of resistance training. Thus I am familiar with how these feel and how they differ from the more usual pains caused by my muscular dystrophy. This helps me recognize what is likely causing a particular muscle pain on a particular occasion.

Can you describe malarial “muscle aches” in more detail? For example, which muscles are affected? (The muscular dystrophy tends to cause pain more often in certain muscles while others are more rarely, or not at all, affected … so this information alone could be helpful). Does the ache tend to stay in one set of muscles, or does it move around, hurting one set of muscles on Monday morning and another on Monday night, etc.? Is it a persistent, steady pain (hurting as much on Wednesday as it did on Tuesday) or does it fluctuate? Is it a sharp pain? Dull? Throbbing? What? Does moving or using the aching muscle make it hurt more? Does it come with joint pain, or not? What?

I do, of course, intend to educate myself further about malaria and am already aware of other symptoms that are more helpful for me to be aware of. (Headaches is NOT among these since I have so many of those also, but some of the other symptoms I’ve read are far more unusual for me and thus more helpful in signaling to me the possibility that I’m actually sick and not just having a “bad pain day”) But knowing more about typical malarial muscle pain would help give me an additional data point to consider.

Your assistance will be much appreciated.

ANSWER

I have checked in with one of our medical advisors here at MALARIA.com and this is what he has replied:

Unfortunately, there is no useful characterization of muscle aches associated with malaria. Malaria is not a subtle disease that needs to be detected by characterizing the location or quality of muscle pains.  The main symptoms of malaria are high fever and shivering/shaking chills.  The presence of these symptoms should prompt an evaluation for malaria.  That being said, it should not be an issue if the person takes malaria chemoprophylaxis and uses appropriate mosquito avoidance measures.

Hope that helps!

Regular Fever after Malaria

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QUESTION

I am from Indore (India). I was affected by malaria positive vivax. My doctor give me some tablet but soon my fever is gone. After few months my fever is come back and fever is repeated every time but does not leave for long time. Fever will repeated after few hours. What can I do?

ANSWER

It sounds like you might have recurring P. vivax malaria. This is when the malaria is treated in the blood stage of infection, but some parasites are able to remain dormant in the liver, and come back and cause disease later on. You should talk to your doctor about taking primaquine—this is a drug that can kill the liver stages and thus prevent future relapses of infection. However, you should be tested for G6DP deficiency first. Also, when you experience a recurrence of the fever, you should still go to your doctor for diagnosis, to confirm that you do have malaria and not another disease. The symptoms of malaria are very generic and can be mistaken for many other things.

Malaria Prophylaxis in Pakistan

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QUESTION

Do I need antimalarials if i am returning to my home country in pakistan after two years?

ANSWER

That depends on where you will be going in Pakistan and how long you are planning on staying. Malaria is a risk at all areas under 2,500m of altitude. However, antimalarials are not recommended to be taken on a long-term basis, so if you are relocating home permanently and will be in an area at risk of malaria transmission, you should look into other preventative measures. This includes sleeping under a long-lasting insecticide-treated bednet at night, which prevents infected mosquitoes from biting you, and also potentially spraying indoors to kill mosquitoes. Making sure all rooms are well-screened can also keep mosquitoes out, and wearing long-sleeved clothing and insect repellent on exposed skin will further reduce bites. If you suspect you might have malaria (for example if you experience high fever, particularly coming in cycles interspersed with chills), you should immediately visit a doctor or clinic to test for malaria, so you can receive prompt and accurate treatment.

If you are staying in Pakistan for a short period of time (< 6 weeks) you could certainly consider taking an anti-malarial drug to prevent malaria. Doxycycline, mefloquine (sold as Lariam) and atovaquone-proguanil (sold as Malarone) are all recommended as appropriate prophylactic medications against malaria in Pakistan.

Symptoms and Causes of Malaria

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QUESTION

What are the symptoms and causes of malaria?

ANSWER

Malaria is caused by a parasite called Plasmodium, which is transmitted via the bites of infected mosquitoes. In the human body, the parasites multiply in the liver, and then infect red blood cells. Usually, people get malaria by being bitten by an infective female Anopheles mosquito. Only Anopheles mosquitoes can transmit malaria and they must have been infected through a previous blood meal taken on an infected person. When a mosquito bites an infected person, a small amount of blood is taken in which contains microscopic malaria parasites. About 1 week later, when the mosquito takes its next blood meal, these parasites mix with the mosquito’s saliva and are injected into the person being bitten.

Because the malaria parasite is found in red blood cells of an infected person, malaria can also be transmitted through blood transfusion, organ transplant, or the shared use of needles or syringes contaminated with blood. Malaria may also be transmitted from a mother to her unborn infant before or during delivery (“congenital” malaria).

There are five kinds of malaria known to infect humans: Plasmodium falciparum, P. vivax, P. ovale, P. malariae and P. knowlesi. The symptoms of malaria differ depending on the type of malaria; P. falciparum  is the most deadly and severe form of the disease. General symptoms of malaria include  include fever and flu-like illness, including shaking chills, headache, muscle aches, and tiredness. Nausea, vomiting, and diarrhea may also occur. Malaria may cause anemia and jaundice (yellow coloring of the skin and eyes) because of the loss of red blood cells.

Symptoms usually appear between 10 and 15 days after the mosquito bite. If not treated, malaria can quickly become life-threatening by disrupting the blood supply to vital organs.