Can allergic purpura cause fever?

Written by Yang Ya Meng
Rheumatology
Updated on May 16, 2025
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Patients with allergic purpura may experience fever, which we call immune fever. To treat such fevers, we need to use non-steroidal anti-inflammatory drugs, commonly used ones include diclofenac sodium sustained-release tablets. Also, if patients with allergic purpura develop fever symptoms, we need to rigorously differentiate whether there is a concurrent infection. We must inquire whether the patient has symptoms of infection such as cough, expectoration, abdominal pain, diarrhea, frequent urination, urgent urination, etc. If the patient shows these symptoms, we then consider that the patient with allergic purpura may also have an infectious fever. In such cases, treatment should include the use of antibiotics like cephalosporins, penicillin, etc. Note: Follow medical advice regarding medication use.

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Written by Li Liu Sheng
Nephrology
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How to treat allergic purpura nephritis?

Kidney damage caused by allergic purpura is called allergic purpura nephritis. The main clinical manifestations include joint pain, rash, black stools, abdominal pain, as well as hematuria, increased urinary protein, elevated blood pressure, and even edema and renal insufficiency. During the acute phase of allergic purpura nephritis, patients should rest in bed, and if there is edema, intake of water and salt should be strictly restricted. It is also important to actively identify the allergens to conduct etiological treatment. Intake of certain suspected foods or medications should be prohibited. If the patient has obvious rashes and joint pain, antiallergic medications can be used for treatment. If the effect is not satisfactory, hormones and immunosuppressive agents can be introduced. Depending on the patient's condition, Traditional Chinese Medicine can also be used to invigorate blood circulation and remove blood stasis. If the condition is severe, combined treatment can be considered for better results.

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Written by Yang Ya Meng
Rheumatology
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Mild symptoms of allergic purpura

Allergic purpura mainly includes three pathological types. The symptoms of the mild type mainly involve changes in the skin, primarily purpura-like rashes around the lower legs and ankle joints. If there are only skin lesions, it is considered a very mild case of allergic purpura. Additionally, more severe cases may involve kidney impairment, such as the presence of protein in the urine. Some patients primarily experience joint pain, also known as the arthritic type. Another group of patients presents mainly with sudden abdominal pain, primarily known as the abdominal type. Therefore, mild symptoms of allergic purpura might just be typical rashes. As long as there is no involvement of the visceral system, it is considered relatively mild.

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Written by Yang Ya Meng
Rheumatology
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What should I do if allergic purpura causes vomiting?

Patients with allergic purpura who experience symptoms of vomiting need to be highly vigilant to determine if it is the gastrointestinal type of allergic purpura. In addition to observing the vomiting, we also need to check for symptoms such as abdominal pain and diarrhea in the patient. Regarding treatment, we need to consider the use of corticosteroids. If the patient’s condition allows, immunosuppressants might also be needed. Dietary considerations are also very important; first, it is essential to maintain a light, liquid diet, avoid spicy or tough foods to manage the vomiting symptoms associated with allergic purpura. (The use of medications should be under the guidance of a professional doctor.)

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Written by Yang Ya Meng
Rheumatology
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Recurrent symptoms of allergic purpura

The clinical manifestations of recurrent allergic purpura primarily include purpuric rashes on the lower limbs. If the patient experiences joint pain, it is also a clinical symptom of recurrent allergic purpura. Some severe cases of allergic purpura may even present with abdominal pain and other gastrointestinal symptoms. Additionally, some patients may exhibit significant amounts of protein in the urine and impaired creatinine levels. This indicates allergic purpura with purpuric nephritis, which is considered severe in the context of allergic purpura. Therefore, if a patient presents with the aforementioned symptoms, the recurrence of allergic purpura should be considered. At this point, further examinations such as blood tests, urine tests, and kidney function tests can be conducted to assess the condition.

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Written by Yang Ya Meng
Rheumatology
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Does allergic purpura cause itchy skin?

The skin of patients with allergic purpura generally does not show symptoms of itching, although it is called allergic purpura. However, the main clinical manifestations are inflammation of the capillaries at the extremities of the lower limbs, accompanied by a characteristic rash, without noticeable symptoms of skin itching. If a patient with allergic purpura also has symptoms of skin itching, it may be necessary to consider whether there is a concurrent allergic dermatitis or similar condition. Besides the typical purpuric rash on both lower limbs, some patients with allergic purpura may also experience nausea, vomiting, diarrhea, and these symptoms are referred to as the gastrointestinal type of allergic purpura. Some patients may experience joint pain, which belongs to the joint type of allergic purpura, and others may present with proteinuria, which belongs to the renal type of allergic purpura.