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.
Using ice treatment appropriately can help to reduce knee swelling and pain. It reduces blood flow to the area, helps to numb pain and can speed up healing. Ice can be useful after injuries, with longer term problems, especially during flare-ups of conditions such as arthritis and after knee surgery.