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. Chloroquine phosphate freshwater Chloroquine phosphate tablets bp 250 mg Plaquenil acute pancreatitis Sep 15, 2014 Retinal toxicity is a very rare side effect of the hydroxychloroquine therapy, but when it has occurred, vision loss may be permanent and may progress even years after the cessation of medication. Patients would be examined every 3 months, then annually, until they are stabled. Diagnosis Hydroxychloroquine-induced retinal toxicity Discussion. Chloroquine CQ and hydroxychloroquine Plaquenil HCQ have been used for many years, initially for the treatment of malaria but now more commonly for the treatment of inflammatory diseases such as rheumatoid arthritis and lupus 1. Plaquenil-induced toxicity usually will not occur before five years of taking the drug. “Eye damage due to Plaquenil is not common,” he says. “Rarely will anybody who has good vision and minimal symptoms develop loss of central vision or ability to read if annual screening is done and visual are symptoms reported as soon as they occur so. 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. Hydroxychloroquine toxicity monitoring Hydroxychloroquine Plaquenil, Hydroxychloroquine Plaquenil Toxicity and Recommendations for Screening Plaquenil hydrochloroquinePlaquenil immunosuppression Once retinal toxicity from hydroxychloroquine occurs, it is thought that the retinal changes are permanent and the disease can progress even if hydroxychloroquine is stopped for 1 to 3 years. Newer techniques for evaluation of retinal disease have been developed and these techniques can detect retinal toxicity earlier. My Take on New Ocular Screening Guidelines for Plaquenil.. Protecting your eyesight when taking Plaquenil Lupus.. Hydroxychloroquine DermNet NZ. The British Society for Rheumatology BSR has published updated guidelines on the prescribing and monitoring of DMARDs, which include recommendations for more intensive screening for retinal toxicity in patients on antimalarials. Hydroxychloroquine is generally considered to be the safest DMARD, and a “go to” drug for pregnancy. Retinal pigment changes and retinal toxicity can occur with prolonged use. Early changes tend to be reversible but may progress despite discontinuation if advanced. Our patient demonstrates the importance of using the new recommended screening tools for the detection of early hydroxychloroquine toxicity. 10-2 HVF, SD-OCT, autofluorescence, or mfERG might have detected the hydroxychloroquine retinal toxicity on the day of her presenting symptoms and possibly earlier, potentially limiting the amount of.