What Can Cause Throbbing Pain under My Fingernail If There's No Injury?

When you feel throbbing pain under your fingernail without any trauma to it, one reason might be a glomus tumor. This is a very small, noncancerous lump made of special cells that control blood flow. Even though it is tiny, it can cause a lot of pain that feels like it is throbbing, especially when the nail is touched or comes in contact with changes in temperature. The pain from a glomus tumor can be persistent and may not be linked to any recent injury. Sometimes, other conditions can also make your nail bed painful, such as a low-grade infection or underlying nail conditions linked to systemic issues. If you notice that the discomfort lasts a long time, it is a good idea to get checked by a doctor who can examine your finger and decide on the best steps for diagnosis and treatment.