Furunculosis of the nasal vestibule: causes, diagnosis, complications, treatment

The possible differential diagnosis and known causes of arthritis in a child are :

1- Rheumatic arthritis.

2- Septic arthritis.

3- Familial Mediterranean fever ( FMF )

4- Viral arthritis.

5- Henoch-schonlein purpura

7- Still's disease.

6- Haemophilia.