pictures of spider naevi

Daniel Parker

2 min read

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17-03-2025

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Spider naevi, also known as spider angiomas, are small, red lesions that appear on the skin. They are a type of vascular lesion, meaning they involve blood vessels. This article will explore what spider naevi look like with pictures, their causes, and when to seek medical attention.

What Do Spider Naevi Look Like?

Spider naevi get their name from their characteristic appearance. They resemble a small spider with its legs radiating outward from a central point.

(Insert high-quality image of a spider nevus here. Ensure the image is compressed for fast loading.) Alt text: "Close-up image of a spider nevus on the skin."

• Central Red Spot: At the center of the lesion is a small, red dot. This is the "body" of the spider.

• Radiating Red Lines: From this central point, several thin, red lines extend outwards, resembling the "legs" of a spider.

• Size and Color: Spider naevi are typically small, ranging from a few millimeters to a centimeter in diameter. Their color can vary from bright red to purplish-red. They are usually flat and slightly raised.

(Insert another high-quality image of multiple spider naevi in a different location on the body. Ensure the image is compressed for fast loading.) Alt text: "Multiple spider naevi visible on the skin."

Causes of Spider Naevi

Spider naevi are often benign (non-cancerous) and may develop spontaneously. However, several factors can increase their likelihood of appearance:

• Hormonal Changes: Pregnancy is a common cause, often disappearing after delivery. Fluctuations in estrogen levels play a significant role. Oral contraceptives can also contribute.

• Liver Disease: Spider naevi can sometimes indicate underlying liver disease. This is because the liver plays a crucial role in processing estrogen. If the liver is damaged, excess estrogen may circulate, leading to their formation.

• Vitamin B Deficiency: In some cases, a deficiency in Vitamin B can be a factor.

• Sun Exposure: While not a direct cause, prolonged sun exposure can worsen the appearance of spider naevi.

When to See a Doctor

Most spider naevi are harmless and require no treatment. However, you should consult a dermatologist or healthcare professional if:

• Sudden Appearance of Numerous Lesions: A sudden increase in the number of spider naevi warrants medical evaluation.

• Change in Appearance: If existing spider naevi change significantly in size, color, or shape, it's important to seek medical attention.

• Association with other Symptoms: If you experience other symptoms, such as jaundice, fatigue, or abdominal pain, alongside spider naevi, it's crucial to consult a doctor. These could indicate a more serious underlying condition.

Diagnosis and Treatment

Diagnosis is usually made through a physical examination. A dermatologist can assess the appearance of the spider naevi and consider your medical history. If there's a suspicion of an underlying condition, further tests might be needed, such as liver function tests.

Treatment is typically not necessary for harmless spider naevi. However, if they are bothersome or aesthetically unappealing, several treatments are available, including:

• Sclerotherapy: Injection of a solution to collapse the blood vessels.

• Electrocautery: Using heat to destroy the blood vessels.

• Laser Therapy: A laser is used to target and destroy the affected blood vessels.

Conclusion

Spider naevi are common skin lesions. While often harmless, understanding their causes and when to seek medical attention is crucial. Pictures can help in identification, but a healthcare professional's evaluation is essential for accurate diagnosis and appropriate management. Remember to consult a doctor if you have any concerns about the appearance or number of spider naevi. Early diagnosis and treatment of any underlying conditions are important for maintaining overall health.