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 [stri´ah] (pl. stri´ae) (L.)
1. a band, line, streak, or stripe.
2. in anatomic nomenclature, a longitudinal collection of nerve fibers in the brain.
atrophic striae (stri´ae atro´phicae) atrophic, pinkish or purplish, scarlike lesions, later becoming white (lineae albicantes), on the breasts, thighs, abdomen, and buttocks, due to weakening of elastic tissues, associated with pregnancy (striae gravidarum), overweight, rapid growth during puberty and adolescence, Cushing's syndrome, and topical or prolonged treatment with corticosteroids.
stria diagona´lis (Broca) a band of nerve fibers that forms the caudal zone of the anterior perforated substance where it adjoins the optic tract.
stri´ae gravida´rum striae atrophicae occurring in pregnancy.
Striae gravidarum: linear tears that may occur in the connective tissue. From Gorrie et al., 1994.
stri´ae medulla´res bundles of white fibers across the floor of the fourth ventricle.


See stria.


(stri'a) (stri'e) plural.striae [L., stria, furrow]
A line, stripe, ridge, or thin band that is visible because it contrasts with the surrounding tissue. It may be elevated or of a different color or texture. See: streak

striae acusticae

Horizontal white stripes on the floor of the fourth ventricle of the brain.
Enlarge picture
STRIA ATROPHICA: Abdomen of a gravid woman at term

stria atrophica

A fine pinkish-white or gray line, usually 14 cm long, seen in parts of the body where skin has been stretched. It is commonly seen on thighs, abdomen, and breasts of women who are or have been pregnant; in those whose skin has been stretched by obesity, tumor, or edema; or in people who have taken adrenocortical hormones for a prolonged period. Synonym: stretch mark; stria gravidarum See: illustration

striae gravidarum

Stria atrophica.

stria longitudinalis lateralis

Any of the longitudinal bands of gray matter, slightly elevated on the upper part of the corpus callosum.

stria medullaris

A thin axon tract that originates in the septal nuclei, the hypothalamus, and the anterior thalamic nucleus and synapses in the habenular nuclei of the epithalamus. It is part of the limbic system.
Synonym: stria medullaris thalami See: limbic system for illus

stria medullaris thalami

Stria medullaris.

olfactory stria

Any of three bands of fibers (lateral, intermediate, and medial) that form the roots of the olfactory tract. As it reaches the olfactory areas of the cortex on the undersurface of the brain, the olfactory tract splits into two visible ridges, a large lateral and a small medial stria.

stria of Retzius

See: Retzius, Magnus Gustaf

stria terminalis

An axon tract that originates in the amygdala and synapses in the hypothalamus. It is a slender, compact tract that curves over the thalamus, arching along the medial surface of the caudate nucleus (below the fornix), and terminates in the anterior hypothalamus. It is part of the limbic system.
See: limbic system for illus


Broad, purplish, shiny or whitish lines of atrophy on the skin, most commonly affecting pregnant women, and occurring on the abdomen, breasts or thighs. Striae are due to altered COLLAGEN. Also known as stretch marks.

Patient discussion about striae

Q. How to prevent Stretch Marks? I am pregnant and am starting to get Stretch Marks. How can I stop them?

A. Stretch Marks are hereditary and some women get it while others don't. There are special creams out there in order to prevent stretch marks, however I recommend you take a good moisturizing cream and rub it on your stomach and anywhere else that you need to, every night after the bath.

Q. I want to know why do all pregnant woman get stretch marks and how to treat them? I have given birth to a baby boy recently….it is joyous time on Christmas Eve. This is my second baby. During my previous delivery I didn’t get any stretch mark but now. I want to know why do all pregnant woman get stretch marks and how to treat them?

A. not all women get stretchmarks during pregnancy. some women get them without being pregnant.

Q. Are these stretch marks very common and how to avoid them? I mean which cream to be used? I am in my 8 th month. Everything is going good. Just a worry came when I saw one woman having stretch marks. Are these stretch marks very common and how to avoid them? I mean which cream to be used?

A. Hi , this is my 2nd baby. During the last pregnancy I had stretch marks. I have seen some ladies, who do not have at all. I met one woman with 4 children she did not have any. One of my friend; had in the very first pregnancy. There are creams available for use by pregnant woman before and after pregnancy to avoid stretch marks altogether.

More discussions about striae
References in periodicals archive ?
The pathogenesis of striae is unknown but probably relates to changes in the components of extracellular matrix, including fibrillin, elastin and collagen.
8 In our study, striae were seen in 76% of cases and were more common in multigravida (67%) than in primigravida (33%).
3,4,7] In lichen planus, non-vascular findings, mainly Wikham's striae was the most common finding seen.
Varicose veins, striae, diastasis recti abdominis and easy bruising are markers of systemic alterations in connective tissue, and these factors have not been the focus of previous POP surveys.
It is thought that these striae are formed with a daily (Clark 1968, Clark 1975, Antoine 1978, Broom & Mason 1978, Wrenn 1972, Helm & Malouf 1983) or twice daily (Chauvaud et al.
7 (mu) m; striae 20 /10 (mu) m, punctate, radiate; valves rhombic-elliptic or rhombic-lanceolate with acute round ends; axial area linear or lanceolate.
Wickham's striae are not present in erosive lichen planus.
Be sure to advise patients of potential adverse effects of potent topical steroids, such as atrophy, discoloration, and striae.
Striae often develop on the hips and thighs during the adolescent growth spurt, especially when girls put on a lot of weight.
3(4) each elytron with longitudinal striae from yellow pubescence; abdominal sternites (Fig.
Measurements of length and width were recorded along with striae density/10 pm for each specimen.