Many people always have small red spots on their arms that look like blood spots, but there are no obvious discomfort symptoms, no pain or itching, and they just do not disappear for a long time. What is going on? According to the cause of the patient's illness (1) The cause of simple purpura is unclear. The disease is generally mild, with no obvious changes in the blood and blood vessels, and occasionally mild coagulation dysfunction. (2) Henoch-Schonlein purpura often occurs due to increased permeability and fragility of the blood vessel walls. The vascular system becomes diseased, but the blood itself does not change. Therefore, laboratory tests such as platelet count, clotting time, and prothrombin time are all within normal range. (3) Idiopathic thrombocytopenic purpura: This disease is also known as hemorrhagic purpura and its cause is unknown. According to clinical manifestations (1) Simple purpura generally has no systemic symptoms. Scattered bright red bruises the size of a needle tip may appear on both lower limbs and do not fade when pressed. After seven days, the color gradually fades and disappears. But new petechiae appear. (2) Idiopathic thrombocytopenic purpura can be divided into acute and chronic types. The acute type is less common and can occur in children, often with a history of infection before the onset of the disease. The disease is characterized by sudden onset, fever, extensive skin bleeding, large ecchymoses and hematomas, mucosal and urogenital bleeding, and a significant decrease in platelets, which may be less than 5,000/mm3. The chronic type is more common, more common in young women, with a slow onset and persistent or recurrent bleeding. Severe bleeding may occur not only on the skin, but also on the mucous membranes or internal organs. (3) Rheumatic purpura: Slightly raised rice-sized ecchymoses appear on both lower limbs. Petechiae, wheals, or edematous erythema may also appear. At the same time, there may be swollen and painful joints, as well as systemic symptoms such as fever and weakness in the limbs. (4) The skin manifestations of abdominal purpura are similar to those of rheumatic purpura, but symptoms such as abdominal pain, vomiting, diarrhea, tenesmus, and bloody stools may also occur. In severe cases, intussusception may occur. |
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