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Inherited
Haemorrhagic Telangiectasia — blood vessels are more fragile than usual leading to recurrent bleeding episodes
Ehlers-Danlos syndrome — collagen that supports blood vessels is unusually weak and elastic, making blood vessels less protected and more prone to injury
Acquired
Allergic purpura — small blood vessels are inflamed and prone to leakage, a condition thought to be an autoimmune response and that may be acute or chronic
Last Review Date: May 1, 2018