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. Hydroxychloroquine side effects hair loss Side effects of plaquenil for rheumatoid arthritis Plaquenil maximum dosage for lupus Aralen malaria effets secondaires Plaquenil hydroxychloroquine is a medication most known for its original purpose of treating or preventing malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Ok I started the Plaquenil on Thur night and so have had only about 5 pills. No problems. Last night, to make a long story short, I broke out in HUGE severe hives from my right shoulder down my arm. They were so bad that they went from a cluster to 3 massive hives that blended. Hydroxychloroquine Plaquenil is used to treat malaria, lupus, and rheumatoid arthritis. Learn about side effects, warnings, dosage, and more. 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. Plaquenil for hives Plaquenil hydroxychloroquine 200mg is it causing itchy., Plaquenil and hives. - Sarcoidosis - Inspire Plaquenil for mild rheumatoid arthritis I take plaquenil for the hives which seems to make them less itchy at least. It's hard to tell if the freuency has decreased since it's so variable anyway. I also take zyrtec as needed for the hives. Sometimes there seems to be an association with my menstrual cycle with the hives being worse right before my period, but this pattern doesn't. Chronic Unexplained Hives - Skin conditions - Condition.. Hydroxychloroquine Side Effects, Dosage, Uses, and More. Plaquenil Uses, Dosage & Side Effects -. Hydroxychloroquine HCQ, sold under the brand name Plaquenil among others, is a medication used for the prevention and treatment of certain types of malaria. Specifically it is used for chloroquine-sensitive malaria. Other uses include treatment of rheumatoid arthritis, lupus, and porphyria cutanea tarda. It is taken by mouth. I had been taking plaquenil since April for my lupus and sjogrens. It was working really well and just recently my rheumy told that I was in remission. I felt great. Then I had an allergic reaction to the plaquenil - a rash all over my body, neck, arms and legs. I stopped taking it 1 week ago. Plaquenil and Rashes - from FDA reports Summary Rashes is found among people who take Plaquenil, especially for people who are female, 60+ old, have been taking the drug for 1 month, also take medication Enbrel, and have Pain. This study is created by eHealthMe based on reports of 48,911 people who have side effects when taking Plaquenil.