Try a new search

Format these results:

Searched for:



Total Results:


How high is up? generic prices rise

Reisfeld, Peter L
PMID: 24505578
ISSN: 0011-4162
CID: 808082

Blue in the face - Reply [Letter]

Reisfeld, PL
ISSN: 0190-9622
CID: 55086

Transient acantholytic dermatosis (Grover's disease)

Chapter by: Reisfeld P
in: Current dermatologic diagnosis & treatment by Freedberg IM; Sanchez MR [Eds]
Philadelphia : Lippincott Williams & Wilkins, 2001
pp. 208-209
ISBN: 0781735319
CID: 3764

Blue in the skin

Reisfeld PL
BACKGROUND: The most prevalent theory explaining blue colors in skin is that of bluish scatter. If this accounted for blue perception, it would be measurable since a predominance of scattered blue light should emerge as a measurable reflectance. When objects are viewed with chromatic surround, there may be an increased perception of the hue complementary to their background. This effect, known as color contrast, is a well-established phenomenon and depends on the size, lightness, and intensity of the surrounding color. OBJECTIVE: The purpose of this article is to determine the effect of background on the perception of blue color from a superficial vein. METHODS: Fifteen subjects were asked to observe the color of skin overlying a vein on the hand. This was performed with a variety of achromatic backgrounds and with variable amounts of surrounding normal skin. Color was also measured by direct matching with standardized Munsell chips and then estimated with normal skin surround. RESULTS: Color matching revealed the hue of the vein to be yellowish-gray, and not blue or green. Although few subjects observed green or blue with neutral backgrounds, as the vein was viewed with progressively larger areas of normal surrounding skin, there was an increasing perception of these colors. CONCLUSION: The bluish color of superficial veins is more clearly explained by color contrast than by scattering. Contrast may also account for the color of certain blue nevi and may help explain some purplish colors in the skin
PMID: 10727304
ISSN: 0190-9622
CID: 16787

On standard dermatologic definitions [Comment]

Reisfeld PL
PMID: 9606340
ISSN: 0003-987x
CID: 16788

Lichenoid chronic graft-vs-host disease [Comment]

Reisfeld PL
PMID: 8085882
ISSN: 0003-987x
CID: 16789

A hard subject: use of a durometer to assess skin hardness [Comment]

Reisfeld PL
PMID: 8077488
ISSN: 0190-9622
CID: 16790