1.1 Current evidence on the safety of extracorporeal shockwave therapy (ESWT) for Peyronie's disease appears adequate. However, the evidence on the efficacy does not appear adequate to support the use of this procedure without special arrangements for consent and for audit or research. Clinicians wishing to undertake ESWT for Peyronie's disease should inform the clinical governance leads in their Trusts. They should ensure that patients offered the procedure understand the uncertainty about its efficacy and should provide them with clear written information. Use of the Institute's information for the public is recommended. Clinicians should ensure appropriate arrangements are in place for audit or research. Publication of efficacy outcomes will be useful in reducing the current uncertainty. NICE is not undertaking further investigation at present.