How is parapsoriasis diagnosed?
How is parapsoriasis diagnosed?
Doctors base the diagnosis of parapsoriasis on how the scales and plaques look and where they appear on the body. Sometimes, doctors take a sample of skin tissue and examine it under a microscope to rule out other disorders.
How do you treat scaly dermatitis?
What is the treatment of chronic superficial scaly dermatitis?
- Simple emollients to relieve dryness and scaling.
- Topical steroids to reduce itching.
- Phototherapy, which can clear the patches at least temporarily.
What is Pityriasis lichenoides chronica?
Pityriasis lichenoides designates a group of rare cutaneous disorders ranging from acute ulceronecrotic lesions called pityriasis lichenoides et varioliformis acuta (PLEVA; or Mucha-Habermann disease, acute guttate parapsoriasis) to small, scaling, benign-appearing papules called pityriasis lichenoides chronica (PLC).
What is the duration of parapsoriasis?
The duration of parapsoriasis can be variable. Small plaque disease lasts several months to years and can spontaneously resolve. Large plaque disease is chronic, and treatment is recommended because it may prevent progression to CTCL.
What is the relationship between large plaque parapsoriasis and mycosis fungoides?
The close relationship between large plaque parapsoriasis and mycosis fungoides is highlighted by the detection of TOX expression, a new marker that has been described to be frequently detected in the abnormal T cells in mycosis fungoides. In one study, large plaque parapsoriasis has expression of TOX similar to that of mycosis fungoides.
What is the difference between small and large plaque parapsoriasis?
Histologically, large plaque parapsoriasis is characterized by a dermal lymphocytic infiltrate, which may extend into the epidermis, whereas small plaque parapsoriasis is characterized by spongiotic dermatitis, with a mild superficial lymphocytic infiltrate in the dermis.
