What could a red spot on my nail bed indicate?

Reviewed by Yoshinori Abe, MD

Internal Medicine

A red spot on the nail bed may indicate erythronychia, a subungual glomus tumor, a splinter hemorrhage, or trauma-related bleeding beneath the nail. Less commonly, it can signal an underlying condition such as infection, a benign vascular growth, or in rare cases, subungual melanoma. Because causes range from harmless to serious, an accurate diagnosis from a healthcare professional is essential.

Since nail changes can point to many different conditions—some easily treated and others requiring prompt attention—it's smart to gather more information before deciding on next steps. A free, instant, online symptom check can help you understand possible causes based on your specific symptoms and guide you toward the right level of care, saving you time and unnecessary worry.

Reviewed for medical accuracy: 07/15/2026

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Explanation

A red spot on your nail bed can be concerning, and there are a few possible explanations for it. One possibility is a condition called erythronychia. This condition involves red discoloration of the nail and can appear as a single red band or multiple bands across the nail. Erythronychia can be caused by various factors, including trauma or underlying skin conditions.

Another potential cause is a subungual glomus tumor. This is a type of benign (non-cancerous) tumor that can form under the nail. It often causes pain and a red or bluish spot on the nail. Diagnosis of a glomus tumor is typically confirmed through imaging techniques.

If you notice a red spot on your nail bed, it's a good idea to see a healthcare provider. To help identify what might be causing your symptoms, you can start by taking a free AI symptom checker assessment to better understand your condition before your appointment. Early diagnosis and treatment can help manage any potential issues effectively.

(References)

Chang C, Beutler BD, & Cohen PR. (2017). Report of a Patient with Multiple Horizontal Red Bands .... Dermatology and therapy, 28260214.
de Berker D. (2012). Erythronychia. Dermatologic therapy, 23210759.
Takemura N, Fujii N, & Tanaka T. (2006). Subungual glomus tumor diagnosis based on imaging. The Journal of dermatology, 16700827.

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