Plaquenil is used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Malaria is common in areas such as Africa, South America, and Southern Asia. Plaquenil myositis Can hydroxychloroquine interfere with the immune system Hydroxychloroquine Plaquenil is used to treat malaria, lupus, and rheumatoid arthritis. Learn about side effects, warnings, dosage, and more. I started taking Plaquenil 4 weeks ago for non specific autoimmune disease as indicated by ANA. Symptoms were low grade temperature off and on for a year, joint pain and fatigue. I have already felt some relief. Some nauseau at first but less problem with fever and joint pain. But, now I have started having stomach cramps and diarrhea. I understand these may go away. Is there anything I can. Diarrhea difficulty breathing difficulty seeing at night dizziness or fainting fast, pounding, uneven heartbeat feeling that others are watching you or controlling your behavior feeling that others can hear your thoughts feeling, seeing, or hearing things that are not there fever with or without chills Plaquenil is also an antirheumatic medicine and is used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. This medicine is not effective against all strains of malaria. Plaquenil and diarrhea Plaquenil, diarrhea and weight loss? - Sjogren's World, Stomach problems with Plaquenil • Johns Hopkins Arthritis. Plaquenil time of onsetWhat is the drug plaquenil used forPlaquenil guidelines 2017 I had a lot more looser type stools, sometimes diarrhea, when I started taking Plaquenil. I pretty much solved the problem by taking the Plaquenil with full meals and by adding a Probiotic. I think the Probiotic helped the most. Plaquenil and explosive bowel movements. Hydroxychloroquine Oral Route Side Effects - Mayo Clinic. Plaquenil side effects - kidney problems? - Symptoms.. Find information about common, infrequent and rare side effects of Plaquenil Oral. Plaquenil is also used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. Plaquenil is available in generic form. What Are Side Effects of Plaquenil? Common side effects of Plaquenil include. nausea, vomiting, stomach pain or cramps, loss of appetite, weight loss, diarrhea, dizziness, spinning sensation. Hydroxychloroquine typically is very well tolerated. Serious side effects are rare. The most common side effects are nausea and diarrhea, which often improve with time. Less common side effects include rash, changes in skin pigment such as darkening or dark spots, hair changes, and muscle weakness.