Internet diagnosis of peripheral nerve syndromes is always a bit hit and miss, but this sounds like it could be a condition called meralgia paraesthetica, aka entrapment of the lateral cutaneous nerve of the thigh.
Tends to be a bit higher in the thigh and more lateral, though, than you are describing. Generally resolves over time, no clear cause found.
Or it could be something else entirely, although definitely not leprosy.
Go see a quack.
QDM