These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Erg test plaquenil Autoimmune plaquenil Z 038 is this hydroxychloroquine Serious side effects. blurred vision or other vision changes. ringing in your ears or hearing loss. angioedema, or rapid swelling of your skin. hives. mild or severe bronchospasm that causes trouble breathing. sore throat. unusual bleeding or bruising. blue-black skin color. muscle weakness. hair. Common side effects may include headache, dizziness, ringing in your ears; nausea, vomiting, stomach pain; loss of appetite, weight loss; mood changes, feeling nervous or irritable; skin rash or itching; or. hair loss. Some side effects of hydroxychloroquine may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. If you notice any other effects, check with your healthcare professional. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them: Other side effects not listed may also occur in some patients. Plaquenil side effects heart Plaquenil Hydroxychloroquine Side effects, Images, Uses., Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses Multifocal erg plaquenil toxicityBest generic plaquenil View detailed reports from patients taking plaquenil who experienced heart rate increased. Reports are from official medical reports as well as online extractions from user reviews and forum discussions. Plaquenil “ Side Effects Dizzy, upset stomach, back pain and side pain, abdominal cramps, leg cramps, rapid heart rate. Hydroxychloroquine Sulfate Heart Rate Increased Reports.. Hydroxychloroquine Side Effects Common, Severe, Long Term.. Plaquenil Hydroxychloroquine - Side Effects, Dosage.. In rare cases, Plaquenil can cause cardiomyopathy, a chronic disease of the heart muscle. If you're taking Plaquenil for an autoimmune condition, your symptoms should begin to improve after a few. Check with your doctor immediately if any of the following side effects occur Incidence not known. Blistering, peeling, loosening of the skin blurred vision or other vision changes chest discomfort, pain, or tightness cough or hoarseness dark urine decreased urination defective color vision diarrhea difficulty breathing Many doctors disagree about the effects of plaquenil on the arthritis. It does help in about 60 % of the cases of arthritis by significantly reducing the pain. However, about 20 – 30 percent of people stop using it because of the side effects. Side effects include digestive problems, skin rash and disorders of skin pigmentation.