Subungual glomus tumor is a rare benign tumor with typical symptoms of cold intolerance, severe paroxysmal pain, and well-defined pain location. However, definitive diagnosis is only made by histology after surgical excision.

Glomus tumors are rare, and subungual glomus tumors are the most common. They can appear in other areas of the outer finger, including the fingertip area. So what is a glomus tumor and how to recognize and treat it?