Most of the disease duration of allergic purpura is about 2 weeks, and usually does not remain unhealed for life; however, a few renal patients can be transformed into nephrotic syndrome, etc., and the condition is more prolonged.
Allergic purpura, also known as allergic cutaneous vasculitis, is a common vascular allergic disease, the pathogenesis of which is mainly due to the body’s allergic reaction, resulting in an increase in capillary permeability and fragility, and can also be accompanied by inflammation of small blood vessels, the clinical manifestations of which include purpura, abdominal pain, arthritis, nephritis, and so on.
After appropriate treatment (e.g., prednisone, dexamethasone, loratadine), most patients recover within 2 weeks, while a small percentage of patients who are unable to detoxify from the allergen may experience recurrent episodes, usually at intervals ranging from a few weeks to a few months.
The prognosis for most people is good, and there is no lifelong recovery; however, some patients with renal phenotype can turn into nephrotic syndrome or chronic nephritis, or even end-stage nephritis, and the prognosis is poorer.
Specific diagnosis and treatment need to be carried out under the guidance of physicians.