Telangiectasia

Telangiectasia is a condition characterized by dilation of the capillaries, which causes them to appear as small red or purple clusters, often spidery in appearance, on the skin or the surface of organs. It is also known as spider veins.

Causes

Telangiectasia can be caused by several factors, including genetic disorders, radiation exposure, pregnancy, and certain diseases and conditions. Some of the genetic disorders that can cause telangiectasia include Ataxia-Telangiectasia, Osler-Weber-Rendu syndrome, and Bloom syndrome.

Symptoms

The primary symptom of telangiectasia is the appearance of small red or purple blood vessels on the surface of the skin or mucous membranes. These can occur anywhere on the body but are most commonly found on the face, nose, and legs. Other symptoms can include bleeding, especially from the nose or digestive tract, and organ damage in severe cases.

Diagnosis

Diagnosis of telangiectasia is typically made through a physical examination. In some cases, a biopsy may be performed to confirm the diagnosis. Genetic testing may also be used if a hereditary disorder is suspected.

Treatment

Treatment for telangiectasia depends on the underlying cause. In some cases, no treatment is necessary. If the telangiectasias are causing symptoms or are cosmetically undesirable, treatments can include laser therapy, sclerotherapy, or surgery.

See also

• Ataxia-Telangiectasia
• Osler-Weber-Rendu syndrome
• Bloom syndrome

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References

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External links

• Mayo Clinic - Telangiectasia
• NHS - Telangiectasia

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• Dermoscopy image of nodular basal cell carcinoma
  Dermoscopy image of nodular basal cell carcinoma
• Image showing telangiectasia
  Image showing telangiectasia