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Causes of livedo reticularis include:
- idiopathic - commonly occurs in young females
- secondary
- rheumatological: RA/SLE/PAN/dermatomyositis/antiphospholipid syndrome
- pancreatitis
- infections: TB/lyme disease/syphillis
- lymphoma
Note how similar it looks to erythema ab igne (AKA livedo recticularis e calore) which is a rash caused by prolonged heat exposure, for example by sitting by a radiator or holding a hot water bottle. (photo form wiki commons, taken by Dr Heilman)
Now lets move on to look at one of the causes of livedo reticularis, antiphospholipid syndrome
