It's used to treat and prevent malaria infection, and to reduce symptoms and progression of autoimmune diseases such as lupus, rheumatoid arthritis, and others. Malaria is spread by mosquitoes, which transmit the parasites that cause the infection, usually in tropical and subtropical parts of the world. Plaquenil ilm degeneration Alfuzosin and hydroxychloroquine side effects Plaquenil is the brand name for the prescription drug hydroxychloroquine. It's used to treat and prevent malaria infection, and to reduce symptoms and progression of autoimmune diseases such as lupus, rheumatoid arthritis, and others. Stomach pain; swelling of the feet or lower legs; swollen or painful glands; trouble with breathing, speaking, or swallowing; uncontrolled twisting movements of the neck, trunk, arms, or legs; unusual behavior; unusual bleeding or bruising; unusual facial expressions; unusual tiredness or weakness; yellow eyes or skin; Symptoms of overdose. Drowsiness; dry mouth I have been on 400 mg daily of Plaquenil, last week my doctor took me off of it ue to increase in the pain I had been having in lower back and unbelievable pain in my left leg and especially the extreme pain in the heel of my left foot. It was becoming painful to walk. After 5 days of stopping pain was 80% better. For example, it may be combined with an antibiotic to treat chronic Q-fever, which humans usually catch from farm animals or raw milk. Plaquenil is used to treat other types of infections too. Plaquenil neck pain Neck pain lupus, Plaquenil Side Effects Common, Severe, Long Term - Optometric testing for plaquenil toxicityRetinal thickness changes plaquenil toxicityPlaquenil toxicity reversible 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 Side Effects Common, Severe, Long Term.. Plaquenil can cause back and leg pain? What type?. Plaquenil - Uses, Side Effects, Interactions -. Neck pain is a common complaint. Neck muscles can be strained from poor posture — whether it's leaning over your computer or hunching over your workbench. Osteoarthritis also is a common cause of neck pain. Rarely, neck pain can be a symptom of a more serious problem. I started taking Plaquenil 4 weeks ago for non specific autoimmune disease as indicated by ANA. Symptoms were low grade temperature off and on for a year, joint pain and fatigue. I have already felt some relief. Some nauseau at first but less problem with fever and joint pain. But, now I have started having stomach cramps and diarrhea. I understand these may go away. Is there anything I can. All blood work came back "normal", lupus is in remission/ inactive. Yay! Dr stopped Hydroxychloroquine plaquenil yesterday fearing it is now doing more harm than good. Over all I do feel it may have caused increased anxiety and depression and irritability.however lupus alone can trigger those symptoms I'm sure.