Small red blood spots on the neck may be caused by external forces, allergic diseases, vascular nevi, and pressure purpura.
1. External force: the bath towel used when bathing is rough, repeatedly rubbing the skin, resulting in red spots on the skin.
2. Allergic diseases: If you have allergic diseases, such as atopic dermatitis, solar urticaria, allergic reactions caused by diet or medication, resulting in the appearance of small red dots on the skin, wind clouds, erythema.
3. Vascular nevus: Congenital developmental defects are the main cause of vascular nevus, such as vascular malformations, which may lead to the appearance of red dots on the neck.
4. Pressure purpura: such as crying, vomiting, constipation lead to increased intra-abdominal pressure, causing capillary dilation, rupture, bleeding, the skin may appear red dots.
If you have red dots on your neck, it is advisable to consult the dermatology department of the hospital to find out the cause of the red dots and treat the cause of the disease.