It also associated with rheumatic disorders such as rheumatoid arthritis, and it is rheumatoid factor positive in 90 percent of cases. Hi, I started taking Plaquenil on June 24th and for the last four or 5 days have had horrible itching. My Rhuemy told me to stop taking it until all itching symptoms were gone, then wait another week and start up again with 1 pill (200mg) a day instead of 2 pills. Chloroquine stock concentration Is atovaquone proguanil a chloroquine Chloroquine chemistry Find patient medical information for Hydroxychloroquine Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Hydroxychloroquine is a disease-modifying anti-rheumatic drug DMARD used for rheumatoid arthritis and lupus. Learn how long it takes, risks and side-effects. Skin rash or itching. Unexplained fever, unusual bleeding or bruising. If you notice these less serious side effects, talk with your doctor Headache. Nausea or upset stomach. Diarrhea. Appetite loss. Bleaching of hair or loss of hair. If you notice other side effects that you think are caused by this medicine, tell your doctor. I have been on Plaquenil for 11 months now without the return of any itching. Has anyone else experienced this infernal itch and what was your outcome. Thanks I had terrible itching for a few weeks but I noticed I felt so much better after about 6 to 7 weeks. The itching stopped without lowering the dose from 400mg. Hydroxychloroquine side effects itching Hydroxychloroquine Oral Route Side Effects - Mayo Clinic, Hydroxychloroquine Side-effects, uses, time to work Does plaquenil cause heartburnPsychotropic meds chloroquineWhat side effects does chloroquine phosphate in fishEffects of plaquenil rx on osteoarthritisPlaquenil and quinine One of the most serious side effects is a toxicity in the eye generally with chronic use. People taking 400 mg of hydroxychloroquine or less per day generally have a negligible risk of macular toxicity, whereas the risk begins to go up when a person takes the medication over 5 years or has a cumulative dose of more than 1000 grams. Hydroxychloroquine - Wikipedia. Hydroxychloroquine By mouth - National Library of Medicine.. Hydroxychloroquine MedlinePlus Drug Information. View detailed reports from patients taking Hydroxychloroquine Sulfate who experienced pruritus. Reports are from official medical reports as well as online extractions from user reviews and forum discussions. Side effects may include dizziness or a spinning sensation, hair loss, headaches, and weight loss. While most side effects of hydroxychloroquine are mild, some are potentially serious and should be reported to your healthcare provider immediately, including easy bruising, hearing loss, or muscle weakness. Note This document contains side effect information about hydroxychloroquine. Some of the dosage forms listed on this page may not apply to the brand name Plaquenil. For the Consumer. Applies to hydroxychloroquine oral tablet. Along with its needed effects, hydroxychloroquine the active ingredient contained in Plaquenil may cause some unwanted effects.