The difference between allergic purpura and purpura simplex lies in the differences in pathogenesis and clinical manifestations.
1. Pathogenesis: Henoch-Schönlein purpura is an allergic vasculitis caused by various allergens entering the human body, and it is mostly seen in children and adolescents over 5 years old. The cause of purpura simplex is not clear at present, and it is mostly due to bleeding caused by abnormalities of blood vessel walls, which may be related to estrogen levels.
2. Clinical manifestations: The clinical manifestations of purpura are pinpoint bleeding spots on the surface of the skin, which may also involve the joints or the gastrointestinal tract, resulting in joint swelling and pain, abdominal pain and even blood in the stool. Purpura simplex mainly manifests as recurrent petechiae of varying sizes, which are more common in both lower limbs and have a certain time relationship with menstrual cycle.
If you suffer from purpura, you should go to the hospital in time to clarify the type of purpura and under the guidance of the doctor.