Purpura is a condition of red or purple discolored spots on the skin that do not blanch on applying pressure. The spots are caused by bleeding underneath the skin secondary to platelet disorders, vascular disorders, coagulation disorders, or other causes.

Most purpura disappear in about 7 days. If purpura recurs for no apparent reason, people should see a doctor and have blood tests done to check for blood clotting disorders.

  • Other systemic disorders (autoimmune diseases) involving vasculitis should be ruled out.
  • Echymosis
  • Senile purpura. Steroid ointments can aggrevate the lesion.
  • Purpura annularis telangiectodes
References Actinic Purpura 28846319 
Actinic purpura results from the extravasation of blood into the dermis. This phenomenon is due to the skin atrophy and fragility of the blood vessels in elderly individuals, which is exacerbated by chronic sun exposure.