preferred_name: Hyperpigmentation (knuckles, elbows, axillae, areolae, pubic area)
preferred_name_lc: hyperpigmentation (knuckles, elbows, axillae, areolae, pubic area)
label: Hyperpigmentation (knuckles, elbows, axillae, areolae, pubic area)
label_lc: hyperpigmentation (knuckles, elbows, axillae, areolae, pubic area)