1. Blood count: normal or slightly increased white blood cells.
2.Blood sedimentation: Patients with multi-organ damage often have elevated blood sedimentation.
3.Needle prick test: Use a 20-gauge needle and prick the skin at an angle under aseptic conditions. Observe 24 or 48 hours after the appearance of abscess or folliculitis, surrounded by a red circle, then it is positive.
4, Fundoscopy: for the presence of retinal hemorrhage; slit lamp examination for corneal ulcer, iridocyclitis, uveitis; fundus fluorescence angiography to detect early retinal vasculopathy.
5.Gastroscopy or lower gastrointestinal tract angiography: it helps to detect ulcers in the esophagus and gastrointestinal tract.
6.Angiography: If large vascular lesions are suspected, angiography can be performed to determine the site of the lesion and the degree of damage.
7.Tuberculosis screening test: Because the onset of many domestic patients is related to tuberculosis, chest X-ray (lung CT if necessary), PPD test, anti-tuberculosis antibody and T-Spot are required.
8, certain other rheumatic diseases have similar manifestations to leukoaraiosis, so screening autoantibody tests such as antinuclear antibody and rheumatoid factor can be performed.