The skin and mucous membranes of the whole body show varying degrees of blue-purple

Introduction The skin and mucous membranes of the whole body exhibit different degrees of blue-purple, which is one of the clinical manifestations of intestinal purpura. It is the symptom of nitrite poisoning. Nitrite poisoning is caused by the ingestion of plants containing more nitrites, such as pickled vegetables or stale vegetables, or the accidental use of industrial sodium nitrite as salt. It can also be seen in drinking nitrate or nitrous acid. After salt and well water, nitrite can oxidize normal oxygen-carrying methemoglobin in the blood into methemoglobin, thus losing oxygen carrying capacity and causing tissue hypoxia. Clinically prominent manifestations of skin and mucous membrane cyanosis and other symptoms of hypoxia. Because the occurrence of purpura is related to the intestines, it is also known as intestinal purpura.

Cause

The causes of acute poisoning are:

1. Mistaken nitrite as salt, noodle, etc.

2. Doping and making false.

3. Poisoning.

4. Eat vegetables containing a lot of nitrite, especially fresh leafy vegetables.

Chronic poisoning (including cancer) is mostly caused by:

1. Drink bitter well water and steamer water with high nitrate or nitrite content.

2. Eat salted meat products, kimchi and spoiled vegetables with high nitrate or nitrite content.

an examination

Related inspection

Hemoglobinurial routine blood routine

1. Quantitative test of methemoglobin in blood and quantitative test of nitrite in remaining food.

2. Six tests of blood biochemistry are preliminary tests on human blood conditions, including: alanine aminotransferase, creatinine, urea nitrogen, serum glucose, triglyceride, and total cholesterol.

Differential diagnosis

Skin and mucous pigmentation spots: Skin and mucous membrane spots are a symptom of multiple gastrointestinal polyp syndrome. Generalized Gastrointestial Polyposis Syndrome refers to the occurrence of multiple polyps in the digestive tract (for young metaplastic or inflammatory polyps), ectodermal abnormalities and severe intermittent A group of syndromes of gastrointestinal and neurological symptoms such as diarrhea, abdominal pain, and numbness of limbs. Invented in 1955 by Crokhite and Canada. It is also known as Cronkhite-Canada syndrome. The age of onset is mostly between 30 and 86 years old, and males are more than females, about 1.5:1.

Skin pigmentation: The color of the skin is determined by the melanin (brown), carotene (yellow), oxidized hemoglobin (red) in the dermal capillaries, and reduced hemoglobin (blue) in the vein. important. In addition to ethnic and individual differences in the color of the skin, normal people often have physiological pigmentation in the exposed parts, wrinkles and rubbed parts; therefore, the change of skin color should be compared with the skin around the patient and the affected part. It should not be judged solely from the depth of color.

Skin pigmentation is bronze: Loss of salt nephritis has typical clinical manifestations: polyuria and nocturia, skin pigmentation is bronze, etc., salt-losing nephritis, also known as Thorn syndrome, is currently considered to be a group of severe kidneys. Sexual loss of salt is a special type of certain kidney disease characterized by sex.

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