subungual hemorrhage
Introduction
Introduction Bleeding under the arm refers to sub-deck hemorrhage caused by various reasons, and there is a history of trauma. When the local small blood vessels are ruptured due to traumatic stimulation, the swelling of the nails under the nails occurs. The lack of blood coagulation factors or excessive anticoagulant factors in the blood can also cause large skin ecchymosis, but it is usually common in deep hematoma or joint bleeding. Pay attention to more observations and more discrimination.
Cause
Cause
1, trauma.
2, other diseases, such as blue toe syndrome, blood disease, under the malignant melanoma.
Skin and mucous membrane bleeding caused by congenital or acquired defects in the vessel wall. For example, hereditary hemorrhagic telangiectasia, due to increased local fragility of blood vessels, often repeats bleeding at the same site.
The lack of blood coagulation factors or excessive anticoagulant factors in the blood can also cause large skin ecchymosis, but it is usually common in deep hematoma or joint bleeding. Pay attention to more observations and more discrimination.
Examine
an examination
Related inspection
Coagulation factor activity assay
1. A sudden dark red spot under the nails, the boundary is clear, irregular, and the old damage can be black.
2. Damage will not continue to expand after a period of observation.
3. The damage gradually moves to the distal end with the growth of the nail, and the distance between the proximal end and the small skin is gradually increased.
4. Damage is more than one single, asymmetry.
5. There is often a history of local trauma.
6. Remove the damage deck, and the substance occult blood test is positive, which can be differentiated from the subcutaneous malignant melanoma.
Diagnosis
Differential diagnosis
Malignant melanoma is a rare and extremely malignant cancer, also known as sputum cancer or pigmented nevus. It often has a family history and is mostly autosomal dominant. Malignant banana-like mites, dysplastic melanocytes, sputum and other black sputum or pigmented nevus. The cause of the disease is unknown. It is generally believed to be related to endocrine. It can be induced by prolonged exposure to sunlight, traumatic stimulation, incomplete burning or in vivo examination, low immune function, and viral infection.
Malignant melanoma in the lower part occurs mostly in middle-aged and elderly people. Males are slightly more than females, and occur in the lower limbs, which are common in the toes. In this case, the early symptoms were not obvious, and they were misdiagnosed without any intention. The damage was removed from the deck, and the submerged substance occult blood test was positive and could be identified.
