Types of PG

Associated Systemic Diseases

Ulcerative

Inflammatory bowel disease, rheumatoid arthritis, monoclonal gammapathy, malignancies particularly myeloproliferative disorders e.g. leukemia, myelodysplasia, polycythemia rubra vera

Pustular

Very frequent: inflammatory bowel disease (ulcerative colitis)

Rarely: polycythemia rubra vera, hepatobiliary disease, pyostomatitis vegetans

Bullous

Frequently present: myeloprolifrative disorders

Vegetative

Usually no associated disease