Precautions for Allergic Purpura

Written by Li Jing
Rheumatology
Updated on September 03, 2024
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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 home-news-image

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 Yang Ya Meng
Rheumatology
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What should people with allergic purpura avoid eating?

People with allergic purpura should avoid the following foods: First, foods like celery, coriander, and mushrooms that may trigger photosensitivity should be consumed minimally. Also, seafood such as crabs and shrimp, which are high in protein, should be consumed in limited quantities. Additionally, overly nourishing foods like dog meat and mutton should also be minimized, as these foods may trigger outbreaks of allergic purpura. Besides dietary considerations, individuals with allergic purpura should also avoid getting cold, prevent infections, and avoid strenuous exercise.

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Written by Yang Ya Meng
Rheumatology
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Symptoms of allergic purpura

Allergic purpura, which we generally divide into four types. The first type is the mildest, often primarily characterized by purpuric rash-like skin manifestations. The second type we call allergic purpura arthritis type, where patients, in addition to the typical rash, also experience joint pain symptoms. The third type we refer to as the renal type of allergic purpura, where patients often present primarily with hematuria and proteinuria, and urine tests typically indicate positive urinary protein. The fourth type we call the abdominal type of allergic purpura, where patients suffer from nausea, vomiting, abdominal pain, and diarrhea as their main clinical manifestations.

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Written by Yang Ya Meng
Rheumatology
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How many days will allergic purpura take to fade?

The symptoms of the rash from allergic purpura generally subside naturally after about 7 to 10 days. However, if care is not taken in daily life, there is a high likelihood of recurrence of the rash. Patients with allergic purpura should avoid vigorous activities such as fast running and should also avoid getting chilled and infections, as both cold and infections could exacerbate the condition. Additionally, patients should consume less of foods like shrimp and crab, which may trigger allergic reactions.

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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.