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: Incidence not known Some side effects of hydroxychloroquine may occur that usually do not need medical attention. Hydroxychloroquine sulphate indications Drug of choice for chloroquine resistant malaria Hydroxychloroquine rash Plaquenil 200 mg what used for Aug 29, 2014 Plaquenil, hydroxychloroquine HCQ, is an anti-malarial medication that has been proven to be useful in the treatment of patients with rheumatoid arthritis RA, systemic lupus erythematosus SLE and other inflammatory and autoimmune diseases. In Sjögren’s, Plaquenil is used to treat many symptoms of Sjögren’s including fatigue, joint. Plaquenil hydroxychloroquine belongs to a group of medicines called quinolines. 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 can produce pigment changes in the macula of the retina. The retina is the part of the back of the eye that you see with. The macula is the central part of the retina responsible for central fine vision. With Plaquenil related toxicity, the pigment in the macula can change and alter vision by producing blurring and distortion of objects. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. These side effects may go away during treatment as your body adjusts to the medicine. Plaquenil related diseases Hydroxychloroquine cardiotoxicity presenting as a rapidly., Plaquenil Uses, Dosage & Side Effects - Is hydroxychloroquine a steroidPlaquenil side effects muscle weaknessHalf life of chloroquine Summary Thyroid diseases is found among people who take Plaquenil, especially for people who are female, 60+ old, have been taking the drug for 5 - 10 years, also take medication Enbrel, and have Osteoporosis. Will you have Thyroid diseases with Plaquenil - eHealthMe. Conditions Plaquenil-related Eye Problems Eugene Eye Care. Long-Term Side Effects of Plaquenil for Rheumatoid Arthritis.. What Is Plaquenil? Plaquenil hydroxychloroquine is an antimalarial medication used to treat or prevent malaria, a disease caused by parasites, which enter the body through the bite of a mosquito. Plaquenil is also used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. Plaquenil is available in generic form. Hydroxychloroquine is in a class of medications that was first used to prevent and treat malaria. Today, it is used to treat rheumatoid arthritis, some symptoms of lupus, childhood arthritis or juvenile idiopathic arthritis and other autoimmune diseases. It is not clear why hydroxychloroquine is effective at treating autoimmune diseases. Things to Note with Lupus Overlap Diseases. What are lupus overlap diseases? Some lupus SLE patients have been told by one physician that they have lupus, while told by another physician that they have, for example, scleroderma or another related disorder. How and why does this happen?