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. Hydroxychloroquine mechanism of action arthritis Hydroxychloroquine sulfate usp 200 mg Hydroxychloroquine retinopathy side effects Plaquenil and optic neuropathy Patient does not want to use other medications such as methotrexate and prefers to use Plaquenil again. A Hydroxychloroquine is very well tolerated with the most common side effect related to increased pigmentation, both in the skin but more importantly in the retina see Ask the Expert questions below. When I was having SEVERE facial swelling in the morning it was accompanied by a cough.truns out I was in congestive heart failure caused by a bad lupus flare. If you have a cough too, I would have someone listen to your lungs to make sure they're clear of fluid. Side Effects Nausea, stomach cramps, loss of appetite, diarrhea, dizziness, or headache may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly. Remember. 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. Plaquenil and puffy face Protecting your eyesight when taking Plaquenil Lupus., Facial swelling" Lupus Community - Support Group Chloroquine rheumatoid arthritis mechanism Hydroxychloroquine Plaquenil is a drug that is classified as an anti-malarial drug. Plaquenil is prescribed for the treatment or prevention of malaria. It is also prescribed for the treatment of rheumatoid arthritis, lupus, and the side effects of lupus such as hair loss, joint pain, and more. Hydroxychloroquine Plaquenil Side Effects & Dosage for.. Plaquenil Oral Uses, Side Effects, Interactions.. Plaquenil side effects - Scleroderma - Inspire. Hydroxychloroquine Plaquenil, an antimalarial drug used in lupus and rheumatoid arthritis, may be helpful in some patients with Sjögren's syndrome by reducing joint pain and rash experienced by some patients. Plaquenil is the brand name for the prescription drug hydroxychloroquine. 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. Aug 29, 2014 One of the reasons that physicians feel comfortable in prescribing Plaquenil is its low risk to benefit ratio. This means that the side effects of Plaquenil are mild and infrequent compared with its potential benefits. As with any medication, allergic reactions including skin rashes and non-allergic reactions can occur.