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Descriptor English: Ochronosis
Descriptor Spanish: Ocronosis
Descriptor ocronosis
Scope note: Depósito de ÁCIDO HOMOGENTÍSICO polimerizado en forma de pigmento pardo negruzco en el tejido conectivo. Se presenta en la ALCAPTONURIA, pero se ha observado también en conexión con la exposición a ciertos productos químicos (ejemplo, fenol, trinitrofenol, derivados del benceno).
Descriptor Portuguese: Ocronose
Descriptor French: Ochronose
Entry term(s): Ochronoses
Tree number(s): C23.550.744
RDF Unique Identifier: https://id.nlm.nih.gov/mesh/D009794
Scope note: The yellowish discoloration of connective tissue due to deposition of HOMOGENTISIC ACID (a brown-black pigment). This is due to defects in the metabolism of PHENYLALANINE and TYROSINE. Ochronosis occurs in ALKAPTONURIA, but has also been associated with exposure to certain chemicals (e.g., PHENOL, trinitrophenol, BENZENE DERIVATIVES).
Allowable Qualifiers: BL blood
CF cerebrospinal fluid
CI chemically induced
CL classification
CN congenital
CO complications
DG diagnostic imaging
DH diet therapy
DI diagnosis
DT drug therapy
EC economics
EH ethnology
EM embryology
EN enzymology
EP epidemiology
ET etiology
GE genetics
HI history
IM immunology
ME metabolism
MI microbiology
MO mortality
NU nursing
PA pathology
PC prevention & control
PP physiopathology
PS parasitology
PX psychology
RH rehabilitation
RT radiotherapy
SU surgery
TH therapy
UR urine
VE veterinary
VI virology
DeCS ID: 9979
Unique ID: D009794
NLM Classification: WR 267
Documents indexed in the Virtual Health Library (VHL): Click here to access the VHL documents
Date Established: 1966/01/01
Date of Entry: 1999/01/01
Revision Date: 2009/07/06
Ochronosis - Preferred
Concept UI M0015207
Scope note The yellowish discoloration of connective tissue due to deposition of HOMOGENTISIC ACID (a brown-black pigment). This is due to defects in the metabolism of PHENYLALANINE and TYROSINE. Ochronosis occurs in ALKAPTONURIA, but has also been associated with exposure to certain chemicals (e.g., PHENOL, trinitrophenol, BENZENE DERIVATIVES).
Preferred term Ochronosis
Entry term(s) Ochronoses



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