Burning sensation may occur in ankle due to various factors and the most common underlying cause is Burning feet which is also known Grierson-Gopalan Syndrome. If your ankle has burning sensation along with your feet then it’s called as Burning Feet Syndrome but in case if the burning sensation is limited only to your ankle but not the feet then there are various underlying causes which may cause this Burning sensation.
Some of the underlying causes which may cause Burning sensation are Peripheral Neuropathy, Tarsal Tunnel Syndrome, Morton’s neuroma, Complex regional pain syndrome, Charcot-Marie-Tooth disorder, Diabetes mellitus, Hypothyroidism, Erythromelalgia, Stress, Allergies and other infections!
It would be best to consult your doctor and take different tests as this burning sensation might be cause due to certain Vitamin deficiencies if it’s Burning Feet syndrome as that would help you to rule out causes like Peripheral neuropathy or Hypothyroidism etc.,