Term Name:	familial progressive hyperpigmentation with or without hypopigmentation
Synonyms:	FPHH, melanosis universalis hereditaria, MUH
Definition:	A skin disease characterized by progressive, diffuse hyperpigmentation of variable intensity sometimes associated with cafe-au-lait macules and larger hypopigmented ash-leaf macules that has_material_basis_in heterozygous mutation in the KITLG gene on chromosome 12q21.32.
Ontology:	Human Disease [DOID:0111373]   ( DOID:0111373 )