“…The association between SLE and SCD is uncommon, SLE and SCD are chronic diseases that have several clinical and laboratory findings in common [12], around 40 cases have been reported with SLE and SCD association, which is uncommon, most of them were African women, All cases were diagnosed as lupus at young age and known to have sickle cell disease many years before the diagnosis of lupus [5], we report the described case of Saudi woman with SLE and SCD overlap, in our case the symptoms started with peripheral nervous system involvement then diagnosed with sickle cell disease and severe active SLE wit multisystem involvement (neuropsychiatric lupus and lupus nephritis, thrombocytopenia, anemia, discoid lupus, myositis) our patient was almost asymptomatic for sickle cell disease and was not investigated or admitted to hospital due to sickle crisis or anemia and she did not receive blood transfusion before. Anemia is a common presentation for lupus patients occur with different types and severity, but rarely associated with haemoglobinopathies, hematologic manifestations of SLE are variable [13], lupus patient may have leucopenia, lymphopenia, thrombocytopenia, autoimmune hemolytic anemia (AIHA), which are included in classification criteria of SLE, Thrombotic Thrombocytopenic Purpura (TTP), and myelofibrosis which are not included in SLE classification criteria [14].…”