Malaria is common in areas such as Africa, South America, and Southern Asia. This medicine is not effective against all strains of malaria. Retinal toxicity hydroxychloroquine What is the drug hydroxychloroquine used for The malaria medication hydroxychloroquine Plaquenil may ease the symptoms of some types of sun allergies. Therapy If you have a severe sun allergy, your doctor might suggest gradually getting your skin used to sunlight each spring. Hydroxychloroquine is a quinoline medicine used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Malaria is common in areas such as Africa, South America, and Southern Asia. This medicine is not effective against all strains of malaria. It usually occurs after the first dose of a drug and within 24 hours of taking the drug and exposure to the sun. Symptoms include severe redness on the areas of skin exposed to light, akin to an exaggerated sunburn with severe tenderness. Taking hydroxychloroquine long-term or at high doses may cause irreversible damage to the retina of your eye. Hydroxychloroquine is also an antirheumatic medicine and is used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. Hydroxychloroquine sun skin Hydroxychloroquine Plaquenil Side Effects & Dosage for., Hydroxychloroquine Uses, Dosage & Side Effects - Does plaquenil help with msChloroquine and early pregnancyHydroxychloroquine sulfate rashPlaquenil and sex drive 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. Plaquenil What You Need to Know - Kaleidoscope Fighting Lupus. Photosensitivity Reaction With Certain Medications. Plaquenil and Sun Exposure - Sjogren's World. Hydroxychloroquine is an antimalarial medication that can cause hyperpigmentation of nails, mucosa, and skin 1–5. Retrospective studies cite the incidence of drug-related hyperpigmentation from hydroxychloroquine to be as high as 33% of individuals 6. Applies to hydroxychloroquine oral tablet. Along with its needed effects, hydroxychloroquine may cause some unwanted effects. 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 Hydroxychloroquine is used to prevent or treat malaria infections caused by mosquito bites. It does not work against certain types of malaria chloroquine-resistant. The United States Center for.