Differential Diagnosis for Blood Streak Under Nail Bed with Pain
- Single most likely diagnosis
- Subungual hematoma: This condition occurs when blood collects under the nail, often due to trauma, and is characterized by a blood streak or spot under the nail bed, accompanied by pain.
- Other Likely diagnoses
- Nail bed laceration: A cut or tear in the nail bed can cause bleeding under the nail, leading to a blood streak and pain.
- Subungual melanoma: Although less common, a melanoma under the nail can cause bleeding and pain, and may appear as a streak or spot under the nail bed.
- Do Not Miss (ddxs that may not be likely, but would be deadly if missed.)
- Subungual abscess or infection: An infection under the nail can cause pain, swelling, and bleeding, and if left untreated, can lead to serious complications, such as osteomyelitis or sepsis.
- Subungual squamous cell carcinoma: A type of skin cancer that can occur under the nail, causing bleeding, pain, and other symptoms.
- Rare diagnoses
- Psoriatic nail dystrophy: A condition that affects the nails, causing pitting, thickening, and other changes, including bleeding under the nail bed.
- Systemic lupus erythematosus (SLE): A chronic autoimmune disorder that can cause a range of symptoms, including nail changes, such as bleeding under the nail bed.
- Antiphospholipid syndrome: A rare disorder that can cause blood clots and bleeding, including under the nail bed.