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1. the color produced by stimulation by light waves of wavelength of 571.5 to 578.5 mμ.
2. a color between orange and green, produced by energy of wavelengths between 570 and 590 nm.
3. a dye or stain with this color.
yellow fever an acute infectious type of hemorrhagic fever, transmitted by the female of certain species of mosquitoes, and characterized by fever, jaundice due to necrosis of the liver, and albuminuria. It is less rampant today than previously, largely because of vaccination and better control of the mosquitoes, but it is still a danger in most tropical countries. Among native inhabitants who contract the disease there is a mortality rate of about 5 per cent. In visitors from other climates, fatalities once ran as high as 40 per cent but are now much lower. With proper immunization precautions, a visitor from a temperate country today takes only a minimal risk.

The mosquito that transmits classic yellow fever is Aedes aegypti. In the jungles of Brazil and in parts of Africa, in the absence of Aedes aegypti, the disease may be carried by a different mosquito species that lives in treetops. These forest mosquitoes can communicate the disease to forest workers and also to certain animals, such as monkeys and marmosets, which then serve as virus reservoirs and as sources of reinfection for humans. This form of the disease is called jungle or sylvan yellow fever, and it is difficult to control because of the virtual impossibility of eradicating the tree-inhabiting mosquitoes.
Symptoms and Treatment. Yellow fever has an incubation period of 3 to 6 days. It then manifests suddenly and intensely with fever, headache, muscular aches, and prostration. A few days later, the temperature suddenly falls, only to rise again. The pulse is originally very rapid, but then slows gradually to less than 50 beats per minute. In addition to the characteristic yellowing of the skin, the urine becomes darker. There may be frequent vomiting, and blood may become noticeable in the vomitus (so-called “black vomit”). There may also be bleeding from the mucous membranes.

The disease runs its course in a little more than a week. Those who survive suffer no permanent damage. The jaundice completely disappears. Furthermore, these persons are immune from a second attack. In fatal cases, death is usually due to liver, myocardial, or kidney failure.

There is no specific drug for the cure of yellow fever. The effects of the disease can be mitigated by analgesics, sedatives, bed rest, and a high-calorie, high-carbohydrate diet.
Patient Care. The patient's fever is controlled with cold or tepid sponges and other measures to lower body temperature (see fever). The diet consists of liquids and easily digested foods until the vomiting stops, and then is gradually increased. The patient's bed and room should be well screened to prevent transmission of the fever to others via mosquitoes.
visual yellow all-transretinal.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


A color occupying a position in the spectrum between orange and green. For individual yellow dyes see specific name.
[A.S. geolu]
Farlex Partner Medical Dictionary © Farlex 2012
Drug slang A regionally popular term for LSD or depressants
Quackery A colour that combines red’s energising effects and green’s tonic properties, allegedly stimulating immunity and cleansing the skin and intestines. Yellow is said to be most useful for arthritis, hepatitis, jaundice, rheumatism, stiffness
Physics A primary colour, which has a wavelength of 571.5–578.5 nm
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.


Physicians Desk Reference A book published annually that lists all ± 2500 US therapeutics requiring a physician prescription
PDR 7 color-coded sections
White Manufacturers' index, containing the company addresses and list of products
Pink Product name index, an alphabetical listing of the drugs by brand name
Blue Product classification, where drugs are subdivided into therapeutic classes
Yellow Generic and chemical name index
Multicolored Photographs of the most commonly prescribed tablets and capsules
White Product information, a reprint of the manufacturers' product inserts and
Green Diagnostic product information, a list of manufacturers of diagnostic tests used in office practice and the hospital; Cf Over-the-counter drugs  . ;.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.


(Y, Yel) (yel'ō)
A color occupying a position in the spectrum between orange and green.
[A.S. geolu ]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


One of the hues of the visible spectrum evoked by stimulation of the retina by wavelengths situated in a narrow region between about 560 and 590 nm, i.e. between red and green. The complementary colours to yellow are blues.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann

Patient discussion about yellow

Q. My 11 y/o son eyes appear to have a slight yellow in the whites toward the corners. I am assuming he will need blood work, but does anyone have any idea what may be the cause?

A. If it's not a spot, but rather a diffuse color, it may be jaundice - high levels in the blood of a substance called bilirubin (

If your child is generally healthy, and this change appeared without any overt problem (e.g. liver disease or blood problem), or your child had fever or fasted recently, this jaundice may represents Gilbert syndrome. It's a syndrome of slightly elevated levels of bilirubin, and considered not dangerous.

You may read more here:

Q. husband has horrible rash bil. below knees to his ankles. it is bright red yellow weeping cracks. On statins He has been on zocor for 15 years and we are so afraid this may have something to do with this drug. He has stopped taking the drug because the pain and weakness, and numbness in his legs is considerable

A. i looked up for side effects and i saw only "eczema" as a skin side effect. but it seems odd to me that after 15 years you got this kind of side effect. it should have appeared years ago. you know- it might be a very good idea to go and see a Dr... and not stopping a medication without warning..

More discussions about yellow
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References in periodicals archive ?
Binder Type Relative Yellowing (1-10; 1=best) Styrene Butadiene 8 Polyvinyl Acetate 8 Standard S/C Acrylic 5 Non-Yellowing Acrylic 2 Thermoplastic Acrylic 1