But if you get a rash or more serious reaction when you take one of these drugs, you may have a sulfa allergy. Sulfa drugs, also called sulfonamides, include antibiotics and other types of drugs. Around 3% of people have some type of reaction to them. Sle on plaquenil Eye retinal toxicity dosage hydroxychloroquine A delayed allergic reaction typically begins between two and three days after exposure to an antigen, rather than almost immediately. Such reactions can be observed with a number of allergens and can be tricky to diagnose and treat because doctors usually assume allergies are related to recent exposures. 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. Although not all of these side effects may occur, if they do occur they may need medical attention. Aug 02, 2012 I am one of many who suffer ME symptoms including the post exertional fatigue and pain after taking a fluoroquinolone antibiotic or other closely related drugs. Some of us with Fluoroquinolone Toxicity Syndrome FQT took only one pill, others like myself took multiple courses with delayed reactions. She’ll decide whether to take you off the drug and how to treat your symptoms. Tell your doctor right away if you think you’re having a reaction to a sulfa drug. Delayed allergic reaction to plaquenil Plaquenil Tablets - Medsafe, Plaquenil Side Effects Common, Severe, Long Term - Chloroquine phosphate tablets side effectsPlaquenil costfor generic Aug 14, 2017 Plaquenil is the brand name of hydroxychloroquine, a drug used to prevent or treat malaria 2. Plaquenil is also used for long-term treatment of autoimmune diseases such as rheumatoid arthritis RA and systemic lupus erythmatosis. According to the Mayo Clinic, it can take up to six months' constant use before an effect is seen in RA 1. Plaquenil can cause serious side effects when used in high doses for chronic diseases such as RA over the long term. Long-Term Side Effects of Plaquenil for Rheumatoid Arthritis.. Fluoroquinolone Antibiotics Cipro, Levaquin, Avelox.. What Are the Symptoms of a Prednisone Allergy? with pictures. That's a real common side effect of Lupus is unexplained rashes. If you've ever had an allergic reaction to a drug then this is the type of reaction you'd have if you were allergic to the Plaquenil; and they'd stay until the Plaquenil was out of your system. If they're coming and going more than likely it isn't the Plaquenil. 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. Apr 15, 2015 The primary diagnostic symptoms of hypersensitivity reactions may include edema either localized around injection sites or more generalized, erythema, pruritus, pain or tenderness related to pressure effects, rash, and induration.2,14 Delayed reactions may also present with various types of skin lesions40 including painful erythematous.