Rare Disease

Arthritis mutilans, often called resorptive arthritis, is the most severe and rare form of psoriatic arthritis, affecting only about 5-16% of patients.

Erythrodermic psoriasis, affecting about 1-2% of psoriatic patients, is a rare, potentially life-threatening variant of psoriasis.

Harlequin ichthyosis is a rare skin disorder with thick, large, plate-like scales over the entire body that later develop into erythroderma.

Pustular psoriasis (PP) is a rare and potentially serious inflammatory skin disorder affecting about 1% of patients with psoriasis.

Hidradenitis suppurativa is a chronic inflammatory skin condition that presents with painful, deep, and inflamed lesions found in flexural, apocrine gland-bearing sites.

Argyria is a rare dermatologic condition that presents with blue or grey mucocutaneous discoloration following cutaneous exposure or ingestion of silver.

ICYMI, this week we had stories about blastic plasmacytoid dendritic cell neoplasm, epidermolysis bullosa, an interview with Seth Matarasso, MD, and more.

Epidermolysis bullosa is a broad term used to identify a group of genetic disorders that result in skin blistering and fragility.

Erythropoietic protoporphyria (EPP) is a life-long and debilitating disorder resulting from defects in the enzymes in heme synthesis. Patients with the disease are cast indoors due to extreme photosensitivity.

MD is a type of delusional parasitosis where patients report that their skin contains parasites, toxins, fibers, or other foreign material.