Cellulitis complicating a boil

Age: 16 years
Gender: Female
Site: Dorsal surface of the hand
Duration: 3 days
History:
Severe local pain and fever
History of an injury by a sharp edge of knife
No history of contact with animals or meat
Findings:

* A red nodule with central pus formation (Orf-like boil)
* An ill-defined red tender swelling
Investigations:
Normal blood glucose level
Lesional swab yielded gram-positive cocci
Culture: Heavy growth of Staphylococcus aureus
Treatment:

Systemic cefixime 400 mg b.i.d plus fusidic acid cream twice daily for 10 days and oral analgesic (Mefanemic acid 500 mg capsule on need)
Response: Complete resolution