One such commonly used medication for dermatologic and rheumatologic inflammatory conditions is hydroxychloroquine (Plaquenil), a chloroquine derivative. It is used to treat many diseases including malaria, rheumatoid arthritis and systemic lupus erythematosus. Plaquenil hair growth Plaquenil grid Aug 29, 2014 Several risk factors may increase the likelihood of retinal toxicity from Plaquenil such as, age of greater than 60 years, daily dose more than 6.5 mg/kg; use of the drug more than 5 years, obesity, preexisting retinal disease and, renal or liver failure. The risk may be much higher because retinopathy can be detected earlier when using more sensitive screening techniques. OBJECTIVES To reassess the prevalence of and risk factors for hydroxychloroquine retinal toxicity and to determine dosage levels that facilitate safe use of the drug. 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. It is imperative that patients and physicians are aware of and watch for this drug’s ocular side effects. Retinal toxicity from hydroxychloroquine is rare, but even if the medication is discontinued, vision loss may be irreversible and may continue to progress. Risk of plaquenil toxicity Plaquenil Oral Uses, Side Effects, Interactions, Pictures., The risk of toxic retinopathy in patients on long-term. Hydroxychloroquine light sensitivity In addition to dosage, long duration of HCQ usage can put patients at higher risk for developing retinal toxicity. Other risk factors, such as underlying maculopathy, renal disease and use of. Despite Plaquenil dosing recommendations, retinal toxicity.. Hydroxychloroquine Plaquenil Toxicity and Recommendations.. Plaquenil Toxicity - Bennett & Bloom Eye Centers. Feb 19, 2020 Dosage for Plaquenil. The adult dose of Plaquenil to suppress malaria is 400 mg on the same day each week. The pediatric weekly suppressive dosage is 5 mg/kg of body weight. The adult dose of Plaquenil to treat an acute attack of malaria is an initial dose of 800 mg followed by 400 mg in six to eight hours and 400 mg for two more days. A risk factor for Plaquenil hydroxychloroquine retinotoxicity is a daily dose that exceeds 5.0 mg of drug per kg of body weight. The tool on the right simply calculates this threshold based on a ppatient’s real body weight. It’s important to understand that the daily dose is only one risk factor for plaquenil retinotoxicity. Apr 20, 2011 Thus, annual screening is recommended after five years for non-high risk patients. Remember, any patient who is at a high risk for Plaquenil toxicity should be examined on an annual basis following the baseline exam.