blue spot

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mac·u·la ce·ru·'le·a

a bluish stain on the skin caused by the bites of fleas or lice, especially pediculosis pubis.
Synonym(s): blue spot (1)

blue spot

1 also called macula cerulea [sero̅o̅′lē·ə] , one of a number of small grayish blue spots that may appear near the armpits or around the groins of individuals infested with lice, such as in pediculosis corporis and pediculosis pubis. These spots are usually less than 1 cm in diameter and are caused by a substance in the saliva of lice that converts bilirubin to biliverdin.
2 also called Mongolian spot. one of a number of dark blue round or oval spots that may appear as a congenital condition in the sacral regions of certain children less than 4 or 5 years of age. They usually disappear spontaneously as the affected individual matures.

mon·go·li·an spot

(mon-gō'lē-ăn spot)
Any of a number of dark-bluish or mulberry-colored rounded or oval spots on the skin in the sacral region due to the ectopic presence of scattered melanocytes in the dermis. These congenital lesions are frequent in black, Native American, and Asian children from 2-12 years of age after which time they gradually recede; they do not disappear on pressure and are sometimes mistaken for bruises from child abuse.
Synonym(s): blue spot (2) .

mac·u·la ce·ru·le·a

(mak'yū-lă sĕ-rū'lē-ă)
A bluish stain on the skin caused by the bites of fleas or lice, seen especially in pediculosis pubis.
Synonym(s): blue spot (1) .


1. A small surface area differing in appearance from its surroundings. Synonym: macula
2. Randomly collected, as in “spot” urine specimen.

ash-leaf spot

White macules found on the trunk and extremities of persons with tuberous sclerosis.

Bitot spots

See: Bitot spots

blind spot

1. Physiological scotoma situated 15° to the outside of the visual fixation point; the point where the optic nerve enters the eye (optic disk), a region devoid of rods and cones. See: scotoma
2. In psychiatry, the inability of an individual to have insight into his or her own personality.

blue spot

Mongolian spot.

Brushfield spot

See: Brushfield spot

cherry-red spot

A red spot occurring on the retina in children with Tay-Sachs disease.
Synonym: Tay spot

cold spot

An area on a nuclear medicine scan in which no radioactive tracer is taken up, indicative of nonfunctioning tissue in a gland or other structure.

corneal spot


cotton-wool spot

A tiny infarct in the retina, present in hypertension, diabetes mellitus, bacterial endocarditis, and other diseases.

focal spot

The area on the x-ray tube target that is bombarded with electrons to produce x-radiation.

Fordyce spots

See: Fordyce disease

genital spot

The area on the nasal mucosa that tends to bleed during menstruation.
See: vicarious menstruation

hematocystic spot

Any of the focal red marks seen on esophageal varices. They consist of aneurysms of the wall of the dilated blood vessel. Their presence increases the likelihood that the varix may bleed.

histo spots

Scarring of the macula found in those infected with Histoplasma capsulatum.

hot spot

1. An area on the surface of the skin that, when stimulated, experiences a sensation of warmth.
2. In a nuclear medicine scan, a region of the image that shows an abnormally high concentration of injected isotope.
3. Any location that has been radioactively contaminated.
4. . In radiation oncology, a tissue region that is exposed to much more radiation than neighboring tissues.

hypnogenic spot

Hypnogenic zone.

Koplik spot

See: Koplik spot

liver spot

A popular term for a pigmentary skin discoloration, usually in yellow-brown patches.
See: Lentigo senilis

milk spot

A dense area of macrophages in the omentum.
Enlarge picture

mongolian spot

Any of the blue or mulberry-colored spots usually located in the sacral region. It may be present at birth in Asian, American Indian, black, and Southern European infants and usually disappears during childhood.
Synonym: blue spot See: illustration

rose spots

Rose-colored maculae occurring on the abdomen or loins in typhoid fever.

Roth spots

See: Roth spots

ruby spot

Cherry angioma.

shin spots

The colloquial name for necrobiosis lipoidica diabeticorum. This condition is usually, but not always, associated with diabetes.
See: necrobiosis lipoidica diabeticorum

Soemmering spot

See: Soemmering, Samuel T. von

Tardieu spot

See: Tardieu spot

Tay spot

See: cherry-red spot

Trousseau spots

See: Trousseau, Armand

white spots

Light-colored, elevated areas of various sizes occurring on the ventricular surface of the anterior leaflet of the mitral valve in endocarditis.

yellow spot

Abbreviation: y.s.
Macula (3).
References in periodicals archive ?
Mongolian blue spot hold one such example of interethnic variation.
Point to the green spot and say, "3," and to the blue spot and say, "4.
tumefaciens, the frequency of the blue-spotted embryos increased by 50%, as well as the number of blue spots per embryo to 15%, and the percentage of herbicide-resistant callus rose to 29.
DHW marginal region with 3 conspicuous blue spots with white scales in central area in [M.
The white curtains with blue spots she had drawn shut shortly before he passed away are open now to let the sunlight in.
Vertical bars tinged with white and electric blue spots are common on "lit up" sails, such as those shown in under water videos corralling sardines into balls like ocean cowboys rounding up cattle.
In an examination administered by a prison physician, Soltan had "very obvious blue spots under his skin all over his body," a statement on the page said.
The researchers found that many of the worker termites had blue spots where the insects' thorax and abdomen met.
But the map doesn't chart election results: Red splotches indicate a high probability of Gunnison sage-grouse nesting; blue spots represent areas where nesting is unlikely.
Regardless of the colour, be it pink with blue spots or green with yellow spots, the Whitley Bay whingers will still find something to whinge about.