Sacral dimple: Signs and symptoms and complications

new born baby
Sacral dimples are typical in newborns.
Sacral dimples are small clefts at the bottom of the spine. They’re relatively common in newborns and don’t usually indicate problems.

In rare cases, people can experience signs and symptoms later in existence. In the following paragraphs, find out about the possible complications of sacral dimples.

Exactly what is a sacral dimple?

A sacral dimple is really a small dimple or cleft at the bottom of the spinal-cord. It can be found in the little from the back, close to the tailbone, also is referred to as sacrum.

sacral dimple
A sacral dimple is really a hereditary condition that seems within the back.

It’s a hereditary condition, meaning one is born by using it. Sacral dimples are occasionally referred to as pilonidal dimples. Frequently, they’ll be discovered whenever a physician first examines a baby.

Sacral dimples are relatively common in healthy, newborns and don’t normally signal an issue. They’re observed in around 2-4 % of births, although the reason for them is unknown.

Generally, sacral dimples are merely indications of minor abnormalities because the baby grows within the womb. In rare cases, they are able to indicate a much deeper spine abnormality.

They may also trouble later existence and never create problems.

Signs and symptoms

A sacral dimple can look like a small dimple or pit within the back. It is almost always really shallow, and also the bottom is visible easily. A sacral dimple might be found in the crease between your bottom.

However, some attributes can signal further defects, plus they will have to be examined by having an ultrasound. Included in this are:

  • swelling in the region
  • skin tags
  • a birthmark in the region
  • an area of hair through the dimple
  • a fatty lump
  • a dimple bigger or much deeper than 5 centimeters (cm)
  • discoloration
  • tenderness

A sacral dimple may also form in youngsters or adults. Even though the exact cause is unknown, it’s believed it takes place when loose hairs push in to the skin.

Some conditions are recognized to increase the chance of a sacral dimple occurring. Included in this are:

  • weight problems
  • being between your age 15 and 4 decades
  • getting an above-average quantity of hair
  • getting coarse or curly hair
  • an earlier injuries towards the area
  • genealogy from the condition
  • getting employment which involves driving or sitting for lengthy periods


Sacral dimples
Minor sacral dimples don’t have any known risks.
Image credit: The Korean Neurosurgical Society

Sacral dimples which are minor and shallow will often have no complications, and you will find no known risks. These dimples don’t require any treatment.

However, much deeper pits that continue within the body can link straight to the spinal-cord or even the colon. This could also result in a chronic rash. In these instances, the dimple must be closed.

Much deeper pits can frequently become infected, as well as an abscess or cyst may develop. Frequently this kind of growth does not occur before the individual is very young.

There’s no known outcomes of the existence of a sacral dimple and spine dysraphism or incomplete fusion from the spine or spinal-cord.

If there’s concern the sacral dimple is an indication of the inherent problem, then an ultrasound assessing the spine canal is frequently the very first test to become done. It is almost always transported out within three or four several weeks following the child comes into the world.

If testing shows a birth problem associated with a sacral dimple, then your baby may undergo further evaluation and diagnosis for treatment. This could include magnetic resonance imaging (MRI).

Sometimes large or deep sacral dimples are an indication of a birth defect relating to the spinal-cord or even the spine bones. The most typical could well be spina bifida occulta, when there’s a little irregularity within the vertebrae.

People worried about a sacral dimple should contact their physician when they notice the following:

  • drainage of pus
  • redness
  • swelling
  • tenderness

A physician will consider a person’s health background and perform a physical examination before deciding the very best thing to do.

Tethered cord syndrome

A sacral dimple may also indicate a fundamental problem referred to as tethered cord syndrome. This can be a fixation from the spinal-cord that limits an individual’s movement.

Inside a child, substandard elevated tension around the spinal-cord because they grow, be responsible for several nerve problems. Generally, the person are experiencing problems in early childhood, however they might not appear until their adult years.

Signs and symptoms of the syndrome include:

  • back discomfort
  • leg discomfort or numbness
  • leg weakness
  • difficulty walking
  • feet or spine deformities
  • high-arched ft and hammertoes

Generally, tethered cord syndrome is going to be diagnosed using either an MRI or computed tomography (CT) scan. In some instances, electromyography will be employed to assess nerve work as well.

Surgical procedure will be employed to untether the spinal-cord. The kind of surgery is determined by individual cases, signs and symptoms, and conditions.


Most sacral dimples are totally harmless and don’t require treatment. However, in newborns, a physician will check out the infant for just about any signs that could indicate a birth irregularity.

Individuals worried about creating a sacral dimple later in existence might help limit the danger by continuing to keep the region dry and clean and looking after a proper weight.

If the infection does occur, it will likely be given antibiotics. If there’s an abscess, a small operation may be required to empty the pus.

The sacral dimple might have to be surgically removed if infections keep occurring. This solution could be transported in three various ways, with respect to the signs and symptoms:

  • cutting the dimple out and packing it daily with dressing until it heals
  • closing the dimple having a flap of skin and stitching
  • scraping it and filling it having a special glue

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