Observations:
Pityriasis lichenoides is a papulosquamous disorder with remissions and exacerbations. The aetiology of pityriasis lichenoides is unclear. There are isolated reports of the development of pityriasis lichenoides et varioliformis acuta during pregnancy. But pityriasis lichenoides chronica following cesarean delivery was never reported so far. We present a case of pityriasis lichenoides chronica that occurred within15 days after giving birth to her first child by cesarean section. Pregnancy is a condition with profound endocrine and metabolic alterations that are generally well tolerated by the body. However, it is known to generate a state of humoral and cellular immunosuppression. We have thought that is pityriasis lichenoides chronica following cesarean delivery may be associated with decreased immunosuppression after delivery.
Keywords: pityriasis lichenoides chronica, delivery