hypopigmentation 
noun [mass noun]
Inadequate pigmentation of the skin.The other major side effect of cryosurgery for this lesion is hypopigmentation....
- Side effects are few, but may include tendon rupture, infection, steroid flare, hypopigmentation, and soft tissue atrophy.
- Once the lesions have resolved, there may be transient hyper- or hypopigmentation.
- polymignite
- polymineral
- polymineralic
- polymitosis
- polymitotic
- polymodal
- polymodality
- polymodally
- polymolecular
- polymolecularity
- polymolecule
- polymorph
- polymorphemic
- polymorphic
- polymorphically
- polymorphism
- polymorphocellular
- polymorphonuclear
- polymorphonucleate
- polymorphonucleated
- polymorphous
- polymorphously
- polymorphously perverse
- polymorphousness
- polymorphous perverse