Chronic urticaria from tantalum staples

Area of Science:

• Allergy and Immunology
• Medical Devices
• Dermatology

Background:

• Surgical implantation of medical devices can lead to unforeseen complications.
• Chronic urticaria is a debilitating skin condition often with idiopathic causes.
• Tantalum is a biocompatible metal frequently used in surgical implants.

Observation:

• A patient developed chronic urticaria ten months post-surgery involving tantalum staples.
• Intradermal tantalum testing elicited a significant urticarial response.
• Standard antihistamine treatments were ineffective for the urticaria.

Findings:

• The patient's urticaria resolved completely following disulfiram chelation therapy.
• Surgical removal of the tantalum staples led to complete resolution of urticaria.
• A type 1 anaphylactic hypersensitivity to tantalum is suspected.
• Alternatively, tantalum may possess direct histamine-releasing properties.

Implications:

• This case highlights a potential adverse reaction to tantalum implants.
• Disulfiram chelation therapy may be a viable treatment for metal-induced urticaria.
• Further investigation into tantalum's immunogenicity and potential histamine-releasing activity is warranted.