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a circumscribed area or place, usually distinguished by its color; see also macula and tache.
actual focal spot the section of a focal spot on which there is intersection of an electron beam with an anode of an x-ray tube.
Bitot's s's foamy gray triangular spots of keratinized epithelium on the conjunctivae, a sign of vitamin A deficiency.
blind spot
café au lait spot a light brown pigmented macule seen in neurofibromatosis and albright's syndrome.
cherry-red spot the choroid appearing as a red circular area surrounded by gray-white retina, as viewed throught the fovea centralis in tay-sachs disease. Called also Tay's spot.
cotton-wool spot white or gray soft-edged opacities in the retina composed of cytoid bodies; seen in hypertensive retinopathy, lupus erythematosus, and numerous other conditions.
effective focal spot the size of a projected focal spot in a specified direction measured with a quality assurance test tool such as the slit camera.
focal spot
1. the object of a patient's gaze during distraction techniques.
2. a small area of an x-ray target that receives the main electron stream.
Forschheimer s's a fleeting skin eruption consisting of discrete rose spots on the soft palate sometimes seen in rubella just prior to the onset of the skin rash.
Koplik's s's small, irregular, bright red spots on the buccal and lingual mucosa, with a minute bluish white speck in the center of each; they are pathognomonic of beginning measles.
liver spot
1. a lay term for senile lentigo.
2. (in pl.) tinea versicolor.
mental blind spot mental scotoma.
mongolian spot a type of congenital brown to gray-blue nevus; see also mongolian spot.
Roth's s's round or oval white spots consisting of coagulated fibrin seen in the retina in a number of diseases in which a vascular insult resulting in hemorrhage is followed by healing.
Tay's spot cherry-red spot.


1. Synonym(s): macula
2. To lose a slight amount of blood through the vagina.


(spot) a circumscribed area; a small blemish; a macula.
Bitot's spots  foamy gray, triangular spots of keratinized epithelium on the conjunctiva, associated with vitamin A deficiency.
blind spot 
café au lait spots  macules of a distinctive light brown color, such as occur in neurofibromatosis and Albright's syndrome.
cherry-red spot  the choroid appearing as a red circular area surrounded by gray-white retina, as viewed through the fovea centralis in Tay-Sachs disease.
cold spot  see temperature s's.
cotton-wool spots  white or gray soft-edged opacities in the retina, seen in hypertensive retinopathy, lupus erythematosus, and other conditions.
Forschheimer spots  a fleeting exanthem consisting of discrete rose spots on the soft palate sometimes seen in rubella just prior to the onset of the skin rash.
germinal spot  the nucleolus of an oocyte.
hot spot 
2. the sensitive area of a neuroma.
3. an area of increased density on an x-ray or thermographic film.
Koplik's spots  irregular, bright red spots on the buccal and lingual mucosa, with tiny bluish-white specks in the center of each; seen in the prodromal stage of measles.
liver spot 
1. a lay term for any of the brownish spots on the face, neck, or backs of the hands in many older people.
Mariotte's spot  optic disk.
milky spots  aggregations of macrophages in the subserous connective tissue of the pleura and peritoneum.
mongolian spot  a smooth, brown to grayish blue nevus, consisting of an excess of melanocytes, typically found at birth in the sacral region in Asians and dark-skinned races; it usually disappears during childhood.
pain spots  spots on the skin where alone the sense of pain can be produced by a stimulus.
rose spots  an eruption of rose-colored spots on the abdomen and thighs during the first seven days of typhoid fever.
Roth's spots  round or oval white spots sometimes seen in the retina early in the course of subacute bacterial endocarditis.
Soemmering's spot  macula lutea.
Tardieu's spots  spots of ecchymosis under the pleura after death by suffocation.
temperature spots  spots on the skin normally anesthetic to pain and pressure but sensitive respectively to heat and cold.
yellow spot  macula retinae.


1. A mark on a surface differing sharply in color from its surroundings.
2. A blemish, mark, or pimple on the skin.
3. A stain or blot.
To lose a slight amount of blood through the vagina.


Etymology: ME, blot
(in psychotherapy) a small quantum of space that becomes the territorial object and extension of point behavior.


A term of art used in UK histopathology circles, for unknown (“black box”) cases which have such a classic appearance by light microscopy that they can be diagnosed instantly based on pattern recognition.


Gynecology See Spotting Vox populi A small lesion, usually on the skin. See Age spot, Bald spot, Black spot, Blind spot, Cafe-au-lait spot, Horder spot, Hot spot, Liver spot, Milk spot, Mongolian spot, Oak leaf spot, Powder burn spot, Rose spot, Strawberry spot, White spot.


1. Synonym(s): macula.
2. To lose a slight amount of blood through the vagina.


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).


A popular term for any small lump or inflamed area on the skin such as a PUSTULE, PAPULE, COMEDONE, CYST, MACULE, SCAB or VESICLE.


A small, circumscribed area visibly different in colour or texture from the surrounding tissue.
baring of the 
blind spot A visual field defect in which there is such a marked contraction of the peripheral temporal visual field that it lies on, or nasal to, the blind spot. Although it may occur in open-angle glaucoma, it is not indicative of the disease as it also occurs in other conditions (e.g. miosis). See Bjerrum's scotoma.
Bitot's spot Foamy patch found on the bulbar conjunctiva near the limbus in xerophthalmia and due to vitamin A deficiency. Syn. Bitot's patch.
blind spot Physiological negative scotoma in the visual field corresponding to the head of the optic nerve. It is not seen in binocular vision, as the two blind spots do not correspond in the field. In monocular vision it is usually not noticed. It has the shape of an ellipse with its long axis vertical and measuring approximately 7.5º, whereas its shorter axis along the horizontal measures approximately 5.5º. Its centre is located 15.5º to the temporal side of the centre of the visual field and 1.5º below the horizontal meridian. Syn. blind spot of Mariotte; physiological blind spot; punctum caecum (Fig. S11). See myelinated nerve fibres; retinal image.
blind spot enlargement A visual field defect in which the blind spot appears larger than normal. One of the common causes is papilloedema.
blind spot esotropia; syndrome See Swann's syndrome.
cherry-red spot Bright red appearance of the macular area in an eye with occlusion of the central retinal artery, Tay-Sachs disease or Niemann-Pick disease. In the case of central retinal artery occlusion the surrounding area is white due to ischaemia but the reddish reflex from the intact choroidal vessels beneath the fovea shows at that spot since the retina is thinnest there. There is a very marked, if not complete, loss of vision which appears suddenly. In cases of storage disease (i.e. Niemann-Pick or Tay-Sachs), the area surrounding the fovea is artificially whitened and opaque, offsetting the normal pinkish colour of the fovea (Fig. S12). See Niemann-Pick disease; Sandhoff's disease; Tay-Sachs disease; retinal arterial occlusion.
cotton-wool s'spot See cytoid bodies; exudate.
Elschnig's s'spot Small, yellowish spots found in the fundus in advanced hypertensive retinopathy. They are choroidal infarcts caused by insufficient blood supply.
Fuchs'spot A round or elliptical, pigmented spot, usually located in the macular or paramacular area. It occurs in patients who have pathological myopia. It is due to breaks in Bruch's membrane (called lacquer cracks) and to the development of a choroidal neovascular membrane followed by subretinal haemorrhage which has changed colour and has become pigmented. The patient may notice photopsia when the membrane breaks but eventually it causes a loss of vision with a central scotoma. Syn. Forster-Fuchs spot.
Maxwell's spot Entopic phenomenon in which the subject can observe a dark or greyish spot in the visual field corresponding to this fovea. This is accomplished by viewing a diffusely illuminated field through a purple-blue or dark blue filter. (These are the best colours for this observation.) This phenomenon is used clinically to detect eccentric fixation by placing a fixation point in the diffusely illuminated field. The degree of eccentric fixation can thus be estimated by asking the subject to describe the position of the grey spot with respect to the fixation point. See entoptic image.
Roth's spot A small white spot consisting of coagulated fibrin seen in the middle of a retinal haemorrhage. It is associated with leukaemia, but it can be seen in subacute bacterial endocarditis, diabetic retinopathy, hypertensive retinopathy and vascular conditions with capillary fragility.
Fig. S11 Demonstration of the blind spotenlarge picture
Fig. S11 Demonstration of the blind spot
Fig. S12 Cherry-red spot at the maculaenlarge picture
Fig. S12 Cherry-red spot at the macula


1. Synonym(s): macula.
2. To lose a slight amount of blood through the vagina.


n a small circular area.
spot, café-au-lait,
n a group of brown-pigmented areas of the skin occurring particularly in neurofibromatosis.
spot, effective focal,
n (prolonged focus), the apparent size and shape of the focal spot when viewed from a position in the useful beam. With the use of a suitably inclined anode face, the area from which the useful beam stems is sharply concentrated, if seen from the perspective of the useful beam. See also line, focus.
spot, focal,
n the specific area of the face of the anode or target that is bombarded by the focused electron stream when a radiographic tube is in action. It is usually an insert of tungsten.
spot, Fordyce's,
spot, Koplik's, an oral lesion of measles (rubeola); usually occurs on the buccal mucosa opposite the molar teeth as small white or bluish-white spots surrounded by red zones.
spot, pink,


a small, roundish part of a surface which differs from the surrounding surface.

spot disease
of turtles. See shell rot.
spot map
a map with dots on it. Each dot marks where a case or some other incident of epidemiological interest occurred.

Patient discussion about spot

Q. after my husband and i have sex i have spotting and i have really bad cramps what could this be?

A. Hmm... I can think about several options, but it's not wise to try to diagnose people over the net. I think that seeing a gynecologist would be appropriate in this situation.

Meanwhile you can read more here, and here

Q. I would like to get more information about Alopesia Areata(hair losing,bald spots all over my head) Well the Alopesia Areata couses the hair falling in big spots all over the head,you start losing your hair in a diferent way than what it ussually is,the doctor told me there is treatment for it but it does not really works,he said that the only thing i can do is just wait between 6 and 18 months, and after all that time my hair should be growing back;but its so traumatic, tha i cant wait that long, i am only 25 years old , i have a life to live ,please help me,i know is not that bad but i cant help it, if anybody knows about some cure ,that really works , please let me know ,thanks.

A. Alopecia Areata is considered lately as an auto immune disease , that means your body is attacking your hair. this considered beyond treatment. but there are several ways of handling it- local anti immunic treatment and so forth, here is a good site about it:

Q. what is a purple spot on penis

A. could be some kind of hematoma- a bruise, blood vessels that bleed internally and caused a"papula". if you press it and it changes color to white- that could be it. if not, here are some more suggestions:

More discussions about spot
References in periodicals archive ?
With a larger sample you will see that at 200 ppm you will see a few pink spots starting to show up in the powder.
COLORATION: Head and thorax dark yellow, mottled with pink spots, with punctures black to reddish brown; rostral segments I to III dark yellow, and IV brown; pro- and mesosternum black; anterior and posterior lobe of metathoracic peritreme pale yellow; coxae and trochanter dark brown with irregular yellow marks; fore and middle femur dark yellow and densely mottled with black marks; hind femora dark reddish-orange, scattered with black marks; abdominal sterna dark orange, mottled with pink spots, with yellow irregular spots at posterior margin of sterna III to VII; genital capsule dark orange.
tapiae 3 Flowers white with lilac or pink spots, rarely flowers concolor; perianth segments of the right side of the flower radiating at 45[degrees] to the main axis of the flower (the lateral sepal at 45[degrees] while the petal at 135[degrees]); central lobe of the labellum pale pink tinged; plants restricted to NW Chiapas and SE Quintana Roo, Mexico L.
Shortly after the issue on "Born This Way," I was approached by a local directory called Pink Spots (gaypinkspots.
And that will not be easy, even though Prestatyn are When we moved to the house in the 1950s there was just one rose which grew near the house and it was what I now know to be a Rosa Mundi - a very old rose dating back to at least the time of Elizabeth I; it is a strange deep pink creature splattered with pale pink spots and stripes.
More mild rashes can take many forms, but are most typically flat or nearly flat pink spots that blanch, or disappear, when the skin is stretched.
The next morning I had a couple of pink spots left on my face, but everywhere else was tanned as if I had spent a careful week with sunblock.
Geographic position markings are circular pink spots on the pavement with black and white concentric borders that contain a black number or a letter (or both) and are used to designate a specific place on the airport surface.
Dissolving rosy pink spots blend with a phosphoric green paint splattered across the misshaped boots that fitted the uneven feet of a glossy green disfigured torso.
It typically arises with a single patch known as a herald patch, followed by multiple smaller scaly pink spots.
Right cervical lymphadenopathy and a papular rash consisting of 10 pink spots on the thorax and arms were observed.