Systemic lupus erythematosus (SLE):

The cutaneous involvement of SLE is one of the minor problems of the disease but it may be the presenting feature.
Features include macular erythema over the cheeks, nose and forehead ('butterfly rash', ). Palmar erythema, dilated nail fold capillaries, splinter haemorrhages and digital infarcts of the finger tips may also be seen but are not always noticed by the patient. Joint swellings, livedo reticularis and purpura are occasionally seen. Rarely SLE can be complicated by an atypical erythema multiforme-like rash ('Rowell's syndrome'). Treatment is usually managed by a rheumatologist.