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 flatworms Hydroxychloroquine plaquenil cancer Is plaquenil used to treat ms Chloroquine powder Hydroxychloroquine • Methotrexate • IVIG Clinical practice as per literature favors use of dapsone or sulfasalazine. 30 Physical • Symptomatic dermographism • Cold urticaria • Delayed pressure urticaria The mechanism is unknown. Combining telbivudine Tyzeka and hydroxychloroquine may increase the risk of unexplained muscle pain, tenderness, or weakness because both drugs cause such side effects. Hydroxychloroquine suppresses the immune system and should not be combined with drugs that also suppress the immune system or live vaccines. Delayed pressure urticaria is a physical urticaria where erythematous, often painful swellings occur at sites of sustained pressure on the skin, after a delay of several hours. If sought, it is present in up to 40% of patients with ordinary chronic "idiopathic urticaria" to a varying degree. 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. Delayed pressure urticaria hydroxychloroquine Urticaria World Allergy Organization, Hydroxychloroquine Plaquenil Side Effects & Dosage for Malaria Antiinflammatory plaquenil Feb 19, 2020 Plaquenil hydroxychloroquine is an antimalarial medication used to treat or prevent malaria, a disease caused by parasites, which enter the body through the bite of a mosquito. Plaquenil is also used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses. Delayed Pressure Urticaria - ResearchGate. Pressure Urticaria Triggers, Symptoms, And Treatment Skin.. Delayed pressure urticaria DPU is important because it can interfere severely with the quality of life, the condition may be underdiagnosed, its pathogenesis is not defined, and its treatment is very difficult. Jump to Section Quality of life Clinical characteristics Diagnosis Pathogenesis Treatment References Mar 17, 2019 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. Pressure urticaria may occur immediately after a pressure stimulus or more commonly, in delayed pressure urticaria, after a delay of 4–6 hours. Lesions can be induced by a variety of stimuli including standing, walking, wearing tight clothes or sitting on a hard surface.