Anyone taking antimalarial drugs to prevent malaria who develops a fever or flu-like symptoms while taking the medicine or within 2-3 months after traveling to an area where malaria is common should call a physician immediately.
Treatment of knee pain depends on the cause of the knee pain. If you have been working on your knees all day then potentially rest and anti-inflammatories such as ibuprofen can help. If the cause is trauma and there is possible joint damage then you should seek medical attention.
Take a break from your normal activities to reduce repetitive strain on your knee, give the injury time to heal and help prevent further damage. A day or two of rest may be all you need for a minor injury. More-severe damage is likely to need a longer recovery time. Ice. Ice reduces both pain and inflammation. A bag of frozen peas works well because it covers your whole knee. You also can use an ice pack wrapped in a thin towel to protect your skin.