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 and sun exposure Ra med hydroxychloroquine What if plaquenil doesn t work Nov 09, 2018 Hydroxychloroquine can cause serious liver or heart problems, especially if you use certain medicines at the same time, including other medicines to treat malaria; an antibiotic or antifungal. Chronic idiopathic urticaria is a frequent problem where response to treatment is often disappointing. Treatment of patients with chronic idiopathic urticaria involves reducing symptoms with least invasive therapy and carefully balancing risk and benefit. The goal of the therapy is to reduce symptoms until spontaneous resolution occurs. The optimal duration of therapy with cyclosporine is not known. We typically treat patients at a dose required for complete or near-complete control of urticaria for three months and then taper the dose over several months, as tolerated. In the majority of patients, six to nine months of treatment is adequate. 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 Delayed pressure urticaria DermNet NZ, MANAGEMENT OF DIFFICULT URTICARIA Can you take ibuprofen with plaquenil Delayed pressure urticaria is a form of pressure urticaria, which is in turn a form of the condition most of us know as hives. Generally, doctors classify delayed pressure urticaria as a form of "pressure urticaria," which is the reason it's a little difficult to look up on the Internet. Pressure urticaria is condition that causes whelps on the skin. Pressure Urticaria Triggers, Symptoms, And Treatment Skin.. REFERENCES - UpToDate. Pressure Urticaria Background, Pathophysiology, Etiology. Acute Consistent Urticaria Physical Urticarias Urticarial Vasculitis Chronic Idiopathic Urticaria IgE Mediated Episodic Hives Acute Reactions—Often in minutes or hours Very common---Normally with other Symptoms Common With Foods—Within 2 hours Nuts, Shellfish, kiwi, egg white, milk, soy, etc. Pressure urticaria is the development of raised, itchy, reddish areas of skin in response to pressure. The skin changes may occur four to eight hours after the pressure is relieved, and some doctors prefer the term "delayed pressure urticaria" to describe this phenomenon. Re Delayed Pressure Urticaria I too was biten by a spider and have often thought that it might be related to my DPU which I have had for 7 years now. I have read with interest about all the signs and symptoms that everyone has just found this notice board yesterday and it has been helpful to read the storeis of others in a similar situation.