vitiligo

Hansensdisease is likely misspelled.

Hansensdisease has no English definition.

As a noun vitiligo is

the patchy loss of skin pigmentation.

As nouns the difference between taxonomy and vitiligo

is that taxonomy is the science or the technique used to make a classification while vitiligo is vitiligo (patchy loss of skin pigmentation).

As nouns the difference between vitiligo and psoralen

is that vitiligo is vitiligo (patchy loss of skin pigmentation) while psoralen is (medicine) any of a group of furanocoumarins, from the seeds of various plants, that are used to treat psoriasis, eczema and vitiligo.