It's used to treat and prevent malaria infection, and to reduce symptoms and progression of autoimmune diseases such as lupus, rheumatoid arthritis, and others. Malaria is spread by mosquitoes, which transmit the parasites that cause the infection, usually in tropical and subtropical parts of the world. Plaquenil severe side effects Hydroxychloroquine sulfate 200 tabs Mechanism of action of hydroxychloroquine in rheumatoid arthritis Does plaquenil help with allergies Check with your doctor immediately if any of the following side effects occur Incidence not known. Blistering, peeling, loosening of the skin blurred vision or other vision changes chest discomfort, pain, or tightness cough or hoarseness dark urine decreased urination defective color vision diarrhea difficulty breathing Common side effects associated with hydroxychloroquine include 5 headache. dizziness. loss of appetite. nausea. diarrhea. stomach pain. vomiting. skin rash. hypoglycemia low blood sugar Plaquenil is a DMARD which has been prescribed for years to treat rheumatoid arthritis, lupus, juvenile rheumatoid arthritis, and other autoimmune diseases. When the first biologic DMARD received FDA-approval in 1998, and as other biologics followed in subsequent years, it appeared as though Plaquenil would become less prescribed. For example, it may be combined with an antibiotic to treat chronic Q-fever, which humans usually catch from farm animals or raw milk. Plaquenil is used to treat other types of infections too. Long term side effects of plaquenil for rheumatoid arthritis Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses, Treatments for Rheumatoid Arthritis Hydroxy chloroquine resistant malariaSanofi plaquenilIs hydroxychloroquine good when out of dateCan plaquenil cause hearing loss Serious side effects. blurred vision or other vision changes. ringing in your ears or hearing loss. angioedema, or rapid swelling of your skin. hives. mild or severe bronchospasm that causes trouble breathing. sore throat. unusual bleeding or bruising. blue-black skin color. muscle weakness. hair. Hydroxychloroquine Side Effects, Dosage, Uses, and More. Taking Plaquenil for Rheumatoid Arthritis. Plaquenil hydroxychloroquine Basics, Side Effects.. Apr 10, 2019 Common Plaquenil side effects may include headache, dizziness, ringing in your ears; nausea, vomiting, stomach pain; loss of appetite, weight loss; mood changes, feeling nervous or irritable; skin rash or itching; or. hair loss. Sep 13, 2019 Along with its needed effects, hydroxychloroquine the active ingredient contained in Plaquenil may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. Check with your doctor immediately if any of the following side effects occur while taking hydroxychloroquine Rheumatoid arthritis; discoid and systemic lupus erythematosus SLE. Over the long term hydroxychloroquine can reduce pain, swelling and joint stiffness. If you have lupus, it may also improve the rash. It may be as long as 12 weeks before you notice the benefits. Hydroxychloroquine is often taken in combination with other drugs such as methotrexate.