I have been getting these horrible rashes and they are not related to sun exposure. I am starting to wonder if they are related to Plaquenil. Chloroquine santa cruz Plaquenil sarcoidosis hypercalcemia Deschloroquine used on chloroquine resistant parasites Plaquenil is also used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. Plaquenil is available in generic form. What Are Side Effects of Plaquenil? Common side effects of Plaquenil include. nausea, vomiting, stomach pain or cramps, loss of appetite, weight loss, diarrhea, dizziness, spinning sensation, headache, Plaquenil can cause serious side effects when used in high doses for chronic diseases such as RA over the long term. The New Zealand Dermatological Society recommends that to decrease the risk of retina damage, no more than 200mg of Plaquenil should be taken a day, and a dose of 400mg per day should be taken no longer than a few weeks. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including rash, itching/swelling especially of the face/tongue/throat, dizziness, trouble breathing. I've always been one to go for the natural route and am starting to feel like I should just stop taking everything and see what happens - so frustrating. My doctor now wants me to start on Chloroquine instead of plaquenil. Allergic reaction to plaquenil Allergic reaction to Plaquenil Lupus Forums at The Lupus Site, Long-Term Side Effects of Plaquenil for Rheumatoid. Chloroquine resistant malaria mapChloroquine phosphate 500 mg dosagePlaquenil skin changesHydroxychloroquine fda package insert I can say, however, that I have not had any cross allergic reaction to other drugs sometimes associated with sulfa allergies. Whether you try Plaquenil or not is ultimately up to you and your. Plaquenil and Sulfa Allergies" Lupus Community - Support.. Plaquenil Oral Uses, Side Effects, Interactions.. Hydroxychloroquine Side Effects, Dosage, Uses, and More. Do not take Plaquenil if you have ever had an allergic reaction to hydroxychloroquine, chloroquine, or related products or any of the ingredients listed under "Product Description". Allergic reaction to Plaquenil. Discussion in 'Medications' started by SickANDexhausted, Mar 25, 2015. SickANDexhausted Junior Member. I was just prescribed Plauqenil and was given Hydroxycloroquine Zydus. Less than two weeks in, I had an extremely bad allergic reaction. It started out with these ugly, itchy red hives on my left arm. It does sound as though u have a allergic reaction. I hope anti histamine doesn't take the edge off the itching this is very important to report to UR doc. He can give u recommendations for dealing with the rash itching reaction by RX the appropiate antihistamine.