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. Is hydroxychloroquine an anti inflammatoty Can hydroxy chloroquine affect birth control This medication is associated with following side effects loss of balance or coordination. muscle weakness, twitching, or uncontrolled movement. pale skin, easy bruising or bleeding. blurred vision, light sensitivity, seeing halos around light. seizure convulsions confusion, unusual thoughts or behavior. Taking hydroxychloroquine long-term or at high doses may cause irreversible damage to the retina of your eye. Stop taking hydroxychloroquine and call your doctor at once if you have trouble focusing, if you see light streaks or flashes in your vision, or if you notice any swelling or color changes in your eyes. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is. 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. Complete list of side effects of plaquenil Hydroxychloroquine Side Effects, Dosage, Uses, and More, Plaquenil Hydroxychloroquine Side effects, Images, Uses. Plaquenil eye risksChloroquine pharmacological class This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist. In the US - Call your doctor for medical advice about side. Hydroxychloroquine Oral Uses, Side Effects, Interactions, Pictures.. Common and Rare Side Effects for Xifaxan Oral. Side Effects of Rinvoq Upadacitinib Extended-release Tablets.. Common Plaquenil side effects - a study from FDA data Summary In this review, we analyze Plaquenil side effects by the time on the drug, gender and age of the people who have side effects while taking Plaquenil. Hydroxychloroquine is the generic form of Plaquenil but the side effects are the same. My thigh muscles are so sore I can hardly walk, sit or stand. Stairs are a TRUE challenge. I have to struggle up and down taking only one step at a time using only one leg at a time. Plaquenil side effects Get emergency medical help if you have signs of an allergic reaction to Plaquenil hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Taking Plaquenil long-term or at high doses may cause irreversible damage to the retina of your eye.