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. Chloroquine cancer treatment Acta plaquenil Plaquenil side effects during pregnancy Chloroquine dose for malaria prophylaxis Side Effects Nausea, stomach cramps, loss of appetite, diarrhea, dizziness, or headache may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly. Remember. Plaquenil, widely used to treat lupus, rheumatoid arthritis and other inflammatory and dermatologic conditions, is very effective, and “the risk of toxicity in the first five years for someone without special risk factors is very low,” Dr. Marmor said. However, risk increases with duration of use. Hallucination, visual is found among people who take Plaquenil, especially for people who are female, 60+ old also take medication Lasix, and have Essential hypertension. This study is created by eHealthMe based on reports of 48,911 people who have side effects when taking Plaquenil from Food and Drug Administration FDA, and is updated regularly. 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 visual side effects Plaquenil Uses, Dosage & Side Effects -, Rx Side Effects New Plaquenil Guidelines and More. Chloroquine lysosome inhibitorOmeprazole and plaquenilQuinacrine with hydroxychloroquineLong term effects of plaquenilHydroxychloroquine plaquenil weight loss Common side effects may include headache, dizziness, ringing in your ears; nausea, vomiting, stomach pain; loss of appetite, weight loss; mood changes, feeling nervous or irritable; skin rash or itching; or. hair loss. Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses. Will you have Hallucination, visual with Plaquenil - eHealthMe. Hydroxychloroquine Side Effects Common, Severe, Long Term.. Hydroxychloroquine Plaquenil is a drug that is classified as an anti-malarial drug. Plaquenil is prescribed for the treatment or prevention of malaria. It is also prescribed for the treatment of rheumatoid arthritis, lupus, and the side effects of lupus such as hair loss, joint pain, and more. Some side effects 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. Many people using this medication do not have serious side your doctor immediately if any of these unlikely but serious side effects occur arm/leg/back pain, fast heartbeat, hair loss/color change, mental/mood changes e.g. anxiety, depression, hallucinations, ringing in the ears/hearing loss, worsening of skin conditions e.g. psoriasismedication may infrequently cause serious sometimes permanent eye problems or muscle damage, especially if you take it for a long time.