Thin capillary varicose veins are red or purple but not bulging on the skin. These thin varicose veins are called 'telangiectasia' in medical terminology, and their diameter is smaller than 0.2 millimeters. They are quite common, especially on the legs and face. These red thin capillary varicose veins, namely, "telangiectasia," disturb the patients especially aesthetically.

Sclerotherapy, or colloquially known as 'needle therapy,' is an aesthetic treatment method applied especially for thin capillary varicose veins. The treatment mainly aims to aesthetically restore the poor image that is caused by varicose veins.

In addition to complaints such as leg pain and swelling deriving from the varicose veins, they also disturb patients due to the poor appearance they cause. Varicose veins divide into two groups; thin or medium-sized varicose veins that are aesthetically significant, and the large varicose veins causing pain and swelling in the leg.

Venous insufficiency is a considerably common disease in the legs. It is more common in older ages, women, and overweight people. If the valves in the vein system in the legs get destroyed and become dysfunctional, the blood flows backward from top to bottom, namely, the opposite of normal flow. This condition is called "venous insufficiency" or "venous reflux."

Thin capillary varicose veins and medium-sized varicose veins are common in the population by up to 80%. These varicose veins disturb the patients especially because of the poor appearance they cause. Therefore, patients seek aesthetic treatment to improve their appearance.

Sclerotherapy (needle therapy) is a treatment method applied especially for fine and capillary varicose veins on the skin surface. The primary purpose of the treatment is to improve the aesthetic appearance. Sclerotherapy is the process of closing the vein by injecting a chemical substance or drug into the vein with the help of an injector with a thin needle tip. The closed thin varicose veins are absorbed and destroyed by the skin with time, and thus they become invisible or less noticeable.

The term phlebology refers to analyzing and treating the disorders affecting the veins (Greek: phlebos = vein, blood vessel). According to a study by the World Health Organization (WHO), vascular problems are among the most common diseases in the world. Vein disorders in the legs are one of the oldest illnesses suffered by humanity.

Concerning the capillary varicose veins, the varicose veins, which are thin or medium in thickness and which disturb patients especially aesthetically, are understood. Thin capillary varicose veins are red or purple and are not bulging on the skin surface.