Skin depigmentation along lymph vessels of the lower leg following local corticosteroid injection for interdigital neuroma.

Steroid injection is frequently used in the treatment of interdigital neuroma and has a high rate of success. We report the case of a patient who develops skin depigmentation at the injection site and linear streaks of depigmentation over the foot, the ankle and half way up to the knee after a steroid injection for interdigital neuroma. Minor disadvantages such as subcutaneous fat atrophy and depigmentation of the skin at the injection site are well known problems following steroid injection. Depigmentation of the skin with a lymphatic distribution in the foot after steroid injection for interdigital neuroma however, has not yet been reported before. This complication is a serious aesthetic problem and clinicians should be aware of this complication when treating patients with steroid injections for interdigital neuroma.