Nodular lichen myxoedematosus is a localised form of lichen myxoedematosus, a chronic idiopathic cutaneous mucinosis of known aetiology. Ustekinumab is a human interleukin-12/23 monoclonal antibody that could directly or indirectly increase mucin production. Herein, we report for the first time a case of nodular lichen myxoedematosus associated with ustekinumab.
Keywords: biological therapy; drug toxicity; interleukin-23; mucins; scleromyxoedema; toxicity; ustekinumab.
© 2020 The Australasian College of Dermatologists.