The categories of possible disease that may present with joint pain and/or swelling

ARTHRITIS:

-Avascular necrosis and epiphyseal
disorders.
-Reactive and postinfectious arthritis . -Trauma.
-Hematologic: Leukemia, bleeding
diatheses, and hemoglobinopathies.
-Rickets, metabolic and endocrine
disorders.
-Infection. -Tumor: Musculoskeletal neoplasia (eg,
osteosarcoma), lymphoma, and
neuroblastoma .
-Idiopathic .
-Systemic rheumatologic diseases.
source