Parapsoriasis en plaques

Parapsoriasis en plaques is a rare, chronic skin disease that is often considered a precursor to cutaneous T-cell lymphoma (CTCL). It is characterized by scaly, red patches or plaques that typically appear on the trunk, arms, and legs. The exact cause of parapsoriasis en plaques is unknown, but it is thought to be related to an abnormal immune response.

Symptoms

The primary symptom of parapsoriasis en plaques is the appearance of red, scaly patches or plaques on the skin. These patches are typically oval or irregular in shape and may be itchy. They are most commonly found on the trunk, arms, and legs, but can appear anywhere on the body.

Causes

The exact cause of parapsoriasis en plaques is unknown. However, it is thought to be related to an abnormal immune response. Some researchers believe that the disease may be triggered by a viral infection or exposure to certain chemicals or medications.

Diagnosis

Diagnosis of parapsoriasis en plaques is typically made based on the appearance of the skin lesions and a skin biopsy. The biopsy can help to rule out other skin conditions that may have similar symptoms, such as psoriasis or eczema. In some cases, additional tests may be needed to confirm the diagnosis.

Treatment

Treatment for parapsoriasis en plaques is aimed at managing symptoms and preventing progression to CTCL. This may include topical corticosteroids, light therapy (phototherapy), or systemic medications. In some cases, no treatment is needed if the symptoms are mild and not causing discomfort.

Prognosis

The prognosis for parapsoriasis en plaques is generally good, but it can vary depending on the individual and the severity of the disease. In some cases, the disease may progress to CTCL, a type of skin cancer. However, this is relatively rare and most people with parapsoriasis en plaques do not develop CTCL.

See also

• Cutaneous T-cell lymphoma
• Psoriasis
• Eczema