A 42 years old male came to the ER at the night with sudden severe pain in his right ankle; he is smoker, hypertensive, and diabetic with regular medications.
O/E: B.P: 170/90
Temp: 37, 5 C
Pulse: 100
WBC: 13000 /mm
E.S.R: 35 mm/hr
Increased serum uric acid level
His right ankle was swollen, red, hot and tender
What is your provisional diagnosis for this case?