Ixekizumab for Patients with Plaque Psoriasis Affected by Multiple Sclerosis: Case report

Multiple sclerosis (MS) is an autoimmune demyelinating disorder of the central nervous system that shares similar immunopathogenic mechanisms with chronic plaque psoriasis, such as the overexpression of the Th17 pathway. We report a 50-year-old male patient with MS and severe chronic plaque psoriasis who presented to Hospital Virgen de la Victoria, Málaga, Spain, in 2019. He was successfully treated with ixekizumab (anti-interleukin [IL]-17A and IL-17A/F monoclonal antibody). The treatment achieved complete skin clearance (i.e. a Psoriasis Area Severity Index 100 response) with no adverse event and no evidence of progression of the neurological disease either.