Visible capillaries in thigh
Introduction
Introduction Significantly more capillaries are caused by telangiectasia. Capillary expansion refers to the persistent expansion of small blood vessels. Most of the dilated blood vessels are small veins or small arteries, and red silky, reticular or stellate lesions appear on the skin.
Cause
Cause
Climate and environmental factors: long-term living in a relatively harsh living environment, such as the thin air of the plateau, the skin hypoxia leads to an increase in the number of red blood cells, and the vasoconstriction dysfunction causes permanent telangiectasia.
Stimulation of physical factors: such as temperature changes, the tolerance of capillaries exceeds the normal range, causing telangiectasia, excessive sun exposure, chronic photodermatitis, dry skin and so on.
Examine
an examination
Related inspection
Capillary resistance test for capillary fragility capillary fragility test
Secondary are more common in: vascular diseases, autoimmune diseases, physical, endocrine factors and others.
Diagnosis
Differential diagnosis
1, hereditary hemorrhagic telangiectasia autosomal dominant hereditary disease, characterized by multiple expansion of the capillaries or arterioles of the skin, mucous membranes and internal organs, and repeated bleeding of the lesions, the liver is often affected.
2. Pulmonary arteriovenous fistula is a congenital pulmonary vascular malformation. The blood vessel is enlarged or distorted or forms a cavernous hemangioma. The pulmonary artery blood flows directly into the pulmonary vein without passing through the alveoli, and the pulmonary artery directly communicates with the vein to form a short circuit.
