Mucha Habermann disease or Habermann disease is one of a subgroup of parapsoriasis and pityriasis. Habermann disease also is known as pityriasis lichenoides. Habermann can occur in an acute form or in a chronic form. As with other diseases within the pityriasis group, it is characterized by skin eruptions. In the acute form, the disease manifests as a recurring and generalized, reddish-brown, maculopapular eruption or rash. The lesions may be red and elevated with a blister-like appearance; there may be hemorrhage beneath the skin. The eruptions or sores become scaly and crusted and can ulcerate. Often the lesions result in a scar and have the appearance of being pigment depressed. The acute form may or may not progress to the chronic form. The chronic form is somewhat milder but still is characterized by sores and eventual skin death and scarring (National Organization for Rare Disorders [NORD], 1995).