What is capillary dilation?

Sep 08, 2025 Source: Cainiu Health

Dr. Liu Wenmin

Introduction

Telangiectasia is usually not an independent disease, but rather a clinical manifestation or symptom that may be caused by various factors. It refers to the thinning or dilation of capillary walls beneath the skin or mucous membranes, making the blood vessels more visibly prominent, presenting as red thread-like marks or reticular erythema. Proper skin protection should be practiced daily, including applying gentle sunscreen, wearing a hat, or using an umbrella when outdoors.

　　Telangiectasia is usually not an independent disease but rather a clinical manifestation or symptom that may be caused by various factors. It refers to the thinning or dilation of capillary walls beneath the skin or mucous membranes, making the blood vessels more visibly prominent, presenting as red thread-like vessels or reticular erythema. A detailed explanation is as follows:

　　Telangiectasia is a condition characterized by abnormal dilation of capillaries, small veins, or small arteries on the skin or mucosal surfaces. The causes are divided into congenital and acquired types. Congenital cases are mostly due to genetic factors causing abnormal vascular development, becoming evident after birth or during childhood. Acquired cases are commonly triggered by prolonged sun exposure, temperature extremes, skin inflammation, excessive alcohol consumption, or underlying conditions such as cirrhosis and connective tissue diseases. These factors damage the elasticity of blood vessel walls, causing them to lose their normal contractile ability and gradually dilate, forming visible red vessels. They are commonly seen on areas such as the face, neck, and legs.

　　Daily skin protection is important. When going outdoors, apply gentle sunscreen, wear a hat, or use an umbrella to avoid prolonged sun exposure. Choose mild skincare products without alcohol or fragrance to reduce skin irritation. Avoid frequent exposure to alternating hot and cold environments, limit alcohol consumption, and eat less spicy food. If the affected area expands, is accompanied by skin discomfort, or associated with symptoms of underlying diseases, timely medical consultation is necessary to identify the cause.

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How to Repair Dilated Capillaries

In general, capillary dilation may be caused by long-term sun exposure, temperature changes (hot or cold), hormonal fluctuations, rosacea, cirrhosis, and other factors. It is recommended to seek timely medical attention, identify the underlying cause, and proceed with general treatments or medication under a doctor's guidance to promote recovery. In daily life, avoid frequent exfoliation and the use of irritating skincare products to reduce skin damage.

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What is the best diet for capillary dilation?

Under normal circumstances, capillary dilation can be improved by consuming foods such as blueberries, spinach, tomatoes, almonds, and oranges. Additionally, medications such as vitamin C tablets, rutin tablets, calcium dobesilate capsules, compound glycyrrhizin tablets, and mucopolysaccharide polysulfate cream may be taken as directed by a physician for regulation. A detailed analysis is as follows: It is also important to maintain healthy lifestyle habits and a positive mindset in daily life, and to avoid prolonged sun exposure.

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What causes capillary dilation?

Under normal circumstances, the main causes of capillary dilation include environmental irritation, aging, rosacea, cirrhosis, and hereditary hemorrhagic telangiectasia. If discomfort symptoms occur, it is recommended to seek timely medical treatment at a正规 hospital. In daily life, one should avoid frequent temperature changes that stimulate the skin, reduce intake of spicy foods, and maintain gentle cleansing and a moderate temperature for the skin.

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What medications are used to treat telangiectasia?

In general, telangiectasia is a condition characterized by abnormal dilation of capillaries or small veins on the surface of the skin or mucous membranes. Patients may take oral medications such as calcium dobesilate capsules, vitamin C tablets, rutin tablets, compound glycyrrhizin tablets, and tanshinone capsules according to medical advice. A detailed analysis is as follows: maintain good daily habits and avoid prolonged sun exposure.