ALS-LAUS syndrome in a patient with high level of antiphospholipid antibodies: a case report.

When evaluating a patient with amyotrophic lateral sclerosis (ALS), a number of other motor neuron disorders and related motor syndromes should be considered. Herein, we describe a 55-year-old Persian man with typical presentation of ALS in whom based on further finding of elevated level of antiphospholipid antibodies, final diagnosis of ALS with laboratory abnormalities of uncertain significance (ALS-LAUS) was made. With respect to persistent increased titre of antiphospholipid antibodies, he was treated with plasma exchange and prednisolone. After 3 months of treatment, the symptoms improved and antiphospholipid antibody titres decreased. To the best of our knowledge, this is the first case of ALS-LAUS accompanied by high titre of antiphospholipid antibodies with response to plasma exchange and corticosteroids.