Correction: Dimethyl fumarate for psoriasis
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Our article *Dimethyl fumarate for psoriasis* (*DTB* 2017; 55: 141–4) contained three numerical errors. In the *Cost* section, the maximum dose should have read “720mg daily”. In the *Conclusion*, the first sentence of the second paragraph should have read “Dimethyl fumarate produces a clinically significant improvement in psoriasis in around 38% of patients who take it (compared with 15% with placebo) after 16 weeks.” These changes do not alter our overall conclusion.