Intradermal test for leprosy

The intradermal test method for leprosy was injected into the volar skin of the forearm of the subject using a 1:20 test of leprosy 0.1 ml. After 48h, the local erythema with a diameter of >10mm was an early positive reaction, and after 3 weeks, an induration with a diameter of 3~5mm was a late positive reaction. This reaction has a certain relationship with the body's anti-leprosy immunity. Most tuberculous leprosy is positive. Because of the low cellular immunity, tumor-type leprosy has a negative reaction in most severe tumor-type leprosy. Basic Information Specialist classification: skin examination classification: physical examination Applicable gender: whether men and women apply fasting: not fasting Analysis results: Below normal: Normal value: no Above normal: negative: Normal when negative. Positive: After 48h, the local erythema with a diameter of >10mm was an early positive reaction, and after 3 weeks, an induration with a diameter of 3~5mm was a late positive reaction. Tips: Pay attention to the doctor's check. The skin test should be observed regularly to prevent allergies. Normal value negative. Clinical significance Abnormal result After 48h, the local erythema with a diameter of >10mm was an early positive reaction, and after 3 weeks, an induration with a diameter of 3~5mm was a late positive reaction. This reaction has a certain relationship with the body's anti-leprosy immunity. Most tuberculous leprosy is positive. Because of the low cellular immunity, tumor-type leprosy has a negative reaction in most severe tumor-type leprosy. Need to check the crowd Facial nodules or plaques can be fused into large pieces of uneven lesions, thick lips, swollen earlobes, shaped like lion's face; eyebrows falling off, some or most of the hair falling off symptoms. Positive results may be diseases: leprosy considerations Precautions before the examination: The diagnosis of leprosy must be meticulous, and strive for early diagnosis, no missed diagnosis, and no misdiagnosis. Early treatment and early recovery will not increase the condition, cause deformity, disability, or enlarge the infection. Requirements for inspection: Pay attention to the doctor's examination. The skin test should be observed regularly to prevent allergies. Inspection process 0.1 ml of 1/1000 aqueous solution of histamine phosphate was injected into the skin of healthy skin and skin lesions. After about 20 seconds, it was normal to have a erythema of 10 mm in diameter, and then in the original erythema for 40 seconds. There is a erythema of 30-40 mm in diameter around it. The edge of the erythema is uneven, called secondary erythema. Finally, a wheal is formed in the center of the erythema. If there is no secondary erythema, it is abnormal. This method is used. Examination of light spots and white spots. Not suitable for the crowd Generally there are no people who are not suitable. Adverse reactions and risks Generally no adverse reactions.

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