Is allergic purpura nephritis contagious?

Written by Li Liu Sheng

Nephrology

Updated on September 23, 2024

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Kidney damage caused by allergic purpura is called allergic purpuric nephritis. The main mechanism of allergic purpuric nephritis is the deposition of immune complexes in the kidneys, causing hematuria, proteinuria, edema, and hypertension. Severe cases of purpuric nephritis may also lead to renal failure. Additionally, patients with allergic purpuric nephritis exhibit systemic symptoms such as skin purpura, abdominal pain, joint pain, and melena. Allergic purpuric nephritis usually occurs in children, and it is not contagious. Unlike viral hepatitis, tuberculosis, and dysentery, it does not spread through respiratory, digestive, or blood pathways.

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Written by Li Jing

Rheumatology

49sec

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Can allergic purpura cause itching?

Allergic purpura is mainly seen in adolescents and children, with a higher incidence in spring and autumn. The most common cause is infection, followed by medications or food, which can also trigger an episode of allergic purpura. The most common symptoms include purpura on the skin and mucous membranes, abdominal pain, blood in stools, hematuria, or joint pain. The purpura primarily affects the limbs, rarely appears on the trunk, and is symmetrically distributed. At this time, the bleeding spots often have no symptoms, meaning there is no itching of the skin. However, when there is concomitant skin edema or hives, itching can occur.

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Written by Li Jing

Rheumatology

1min 13sec

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Precautions for Allergic Purpura

Allergic purpura is a common allergic disorder, also known as vasculitis, and occurs more frequently in adolescent males. Adults can also be affected, but it is less common, and the majority of cases are due to infections, such as bacterial, viral, or parasitic infections. Food or drug allergies are also part of the causes of allergic purpura. For adolescents who develop allergic purpura, infections should be considered first, followed by allergies. It's important to maintain a light diet, drink plenty of water, wear a mask when going out to prevent upper respiratory infections, and control the intake of high-protein foods such as fish, shrimp, eggs, milk, and lean meat. As for fruits, including mangoes, some people can be triggered to have allergic purpura, especially fruits they have not been exposed to before; it's best to minimize contact with unfamiliar fruits to avoid inducing an allergic purpura attack.

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Written by Pan Wu Shan

Nephrology

1min 6sec

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Is allergic purpura nephritis easy to treat?

Allergic purpura nephritis is essentially a kidney complication caused by allergic purpura. The main symptoms are that the patient first presents with scattered purple spots on the lower limbs, known as allergic purpura. Subsequently, routine urine tests reveal hematuria or proteinuria, allowing for a diagnosis of allergic purpura nephritis. It cannot be completely cured. Currently, treatment first requires complete quantification of urine protein and a renal biopsy to confirm whether it is allergic purpura nephritis and its severity. Generally, it involves the use of steroids. Typical treatment involves firstly avoiding allergens, so any substances that cause allergies should not be contacted to prevent triggering allergic purpura, and thus prevent the recurrence of purpura nephritis. Additionally, it involves adhering to a low-salt, low-fat diet, and avoiding catching colds or staying up late.

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Written by Li Jing

Rheumatology

1min 14sec

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How long will allergic purpura take to heal?

Allergic purpura, as the name implies, is subcutaneous hemorrhage caused by allergies and is a type of special vasculitis. This disease is common among adolescents and children aged 5 to 14 and tends to recur without a fundamental cure. Allergic purpura is rare in adults. Once allergic purpura occurs, it is important to classify the types, which can be divided into skin type, abdominal type, renal type, joint type, and mixed type. The purpose of such classifications is mainly to determine the severity of the condition. If it is merely simple skin bruising, antiallergic medication will suffice. However, if it progresses to abdominal and renal types, these two types are the most severe and must be treated formally with attention to bed rest. Mild allergic purpura can be cured, meaning it can resolve on its own. Regarding how long it will take for allergic purpura to improve, this depends on the severity of the condition. Mild cases can improve in about two weeks, but if the kidneys accumulate damage, then it becomes a chronic disease requiring long-term treatment.

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Written by Li Jing

Rheumatology

51sec

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How to deal with abdominal pain from allergic purpura?

The most common clinical manifestations of allergic purpura are bleeding spots on the lower limbs, hematuria, melena, and joint pain. The presence of melena or bloody stools accompanied by abdominal pain often indicates bleeding from the intestinal mucosa. It is recommended to complete a mesenteric vascular color Doppler ultrasound as soon as possible to identify the bleeding sites. At this time, fasting is absolutely necessary, meaning no food or water should be consumed, as this can exacerbate abdominal pain and bleeding. Fasting should continue until the melena and pain are alleviated. If symptoms continue to worsen, surgery may be necessary to prevent intestinal perforation and the onset of acute peritonitis.