melasman.

Brit.

/mᵻˈlazmə/, U.S.

/məˈlæzmə/

Forms: 1500s 1800s– melasma, 1800s melasmus.

Origin: A borrowing from Greek. Etymon: Greek μέλασμα.

Etymology: < ancient Greek μέλασμα black spot < μελαίνειν to blacken ( < μελαν- , μέλας black: see melano- comb. form) + -σμα , extended form of -μα (see -oma comb. form). Compare post-classical Latin melasma kind of dark patch on the skin, dark spot occurring on the lower leg, especially of elderly people (1755 in B. Castelli Lexicon Medicum II. 137/2). With the form melasmus compare perhaps ancient Greek μελασμός blackening of the flesh.

Medicine.

Originally: †an ulcer caused by venous stasis (obsolete). Later: any of various disorders characterized by patchy or generalized hyperpigmentation of the skin; spec. hyperpigmentation of the face (also called chloasma).

ΘΚΠ

the world > health and disease > ill health > a disease > disorders of visible parts > skin disorders > [noun] > disordered pigmentation

melasma1563

orange skin1822

melanopathia1847

xanthosis1853

xanthelasma1867

xanthochroia1867

xanthoderma1867

xanthopathia1867

xanthoma1869

argyria1874

chloasma1877

leucoderma1884

xeroderma pigmentosum1884

hyperchromatosis1886

melanodermia1886

leucodermia1888

hyperchromasia1889

hyperpigmentation1890

hypochromia1890

xanthochromia1894

xanthodermia1900

melanization1927

1563 T. Gale Certaine Wks. Chirurg. f. 29 Enchymoma..and melasma..are tumours happenyng to olde men throughe the contusion of the vaynes: wherby the bloode flowe out of the coates of the vaynes.

1807 R. Morris & J. Kendrick Edinb. Med. & Physical Dict. II Melasma, or Melasmus, a disease that appears not unfrequently upon the tibia of aged persons, in the form of a livid spot, which in a short time, degenerates into a very foul ulcer.

1854 C. H. Jones & E. H. Sieveking Man. Pathol. Anat. 164 The local discolorations, termed ‘melasma’.

1899 T. C. Allbutt et al. Syst. Med. VIII. 701 Diffuse forms of pigmentation..which are sometimes described under the name of Melasma.

1966 Jrnl. Amer. Med. Assoc. 4 July (Suppl.) 25/1 87% of those patients with drug-induced melasma also had melasma in previous pregnancy.

1996 Pulse 20 Apr. 9 (advt.) Other known symptoms are..growth of pre-existing fibroids; chloasma or melasma which may be persistent.

This entry has been updated (OED Third Edition, June 2001; most recently modified version published online March 2022).

单词	melasma
释义	melasman. Brit. /mᵻˈlazmə/, U.S. /məˈlæzmə/ Forms: 1500s 1800s– melasma, 1800s melasmus. Origin: A borrowing from Greek. Etymon: Greek μέλασμα. Etymology: < ancient Greek μέλασμα black spot < μελαίνειν to blacken ( < μελαν- , μέλας black: see melano- comb. form) + -σμα , extended form of -μα (see -oma comb. form). Compare post-classical Latin melasma kind of dark patch on the skin, dark spot occurring on the lower leg, especially of elderly people (1755 in B. Castelli Lexicon Medicum II. 137/2). With the form melasmus compare perhaps ancient Greek μελασμός blackening of the flesh. Medicine. Originally: †an ulcer caused by venous stasis (obsolete). Later: any of various disorders characterized by patchy or generalized hyperpigmentation of the skin; spec. hyperpigmentation of the face (also called chloasma). ΘΚΠ the world > health and disease > ill health > a disease > disorders of visible parts > skin disorders > [noun] > disordered pigmentation melasma1563 orange skin1822 melanopathia1847 xanthosis1853 xanthelasma1867 xanthochroia1867 xanthoderma1867 xanthopathia1867 xanthoma1869 argyria1874 chloasma1877 leucoderma1884 xeroderma pigmentosum1884 hyperchromatosis1886 melanodermia1886 leucodermia1888 hyperchromasia1889 hyperpigmentation1890 hypochromia1890 xanthochromia1894 xanthodermia1900 melanization1927 1563 T. Gale Certaine Wks. Chirurg. f. 29 Enchymoma..and melasma..are tumours happenyng to olde men throughe the contusion of the vaynes: wherby the bloode flowe out of the coates of the vaynes. 1807 R. Morris & J. Kendrick Edinb. Med. & Physical Dict. II Melasma, or Melasmus, a disease that appears not unfrequently upon the tibia of aged persons, in the form of a livid spot, which in a short time, degenerates into a very foul ulcer. 1854 C. H. Jones & E. H. Sieveking Man. Pathol. Anat. 164 The local discolorations, termed ‘melasma’. 1899 T. C. Allbutt et al. Syst. Med. VIII. 701 Diffuse forms of pigmentation..which are sometimes described under the name of Melasma. 1966 Jrnl. Amer. Med. Assoc. 4 July (Suppl.) 25/1 87% of those patients with drug-induced melasma also had melasma in previous pregnancy. 1996 Pulse 20 Apr. 9 (advt.) Other known symptoms are..growth of pre-existing fibroids; chloasma or melasma which may be persistent. This entry has been updated (OED Third Edition, June 2001; most recently modified version published online March 2022). < n.1563
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