How can you tell if your toenail is dead?

A toenail may be dead if it appears discolored, often turning yellow, brown, or black, and lacks shine. Additionally, if the nail is separating from the nail bed or if there is persistent pain and swelling around the nail, these could be signs of underlying issues. In some cases, a dead toenail may feel detached or loose. Consulting a healthcare professional for an accurate diagnosis is recommended.