What are varicose veins and What causes them?

What are varicose veins and What causes them?

What are varicose veins and What causes them is a general topic which we are going to discuss today.

Varicose veins occur primarily as a result of a congenital connective tissue

The veins (except pulmonary veins) collects the de-oxygenated blood from the tissues and transport it back to the heart. They have to work against gravity. On the legs ,when the muscles contract, they squeeze the deep veins as a sponge and convey the blood towards the heart.The deep veins collect the blood from the superficial veins and Venous valves, which act as a check valve to prevent the blood from flowing back when the muscles relax. In addition, the pull of the heart and the pressure changes in the chest and abdomen breathing support the return of blood from the deep vein.Compared to the “muscular” arteries (arteries), when the lungs receive oxygenated blood from the heart and into the body. Blood pressure is here considerably lower than in the arteries, and the blood flows more slowly. In a connective tissue vein walls sag with time. Then venous valves no longer close as the time pass by, the blood sags in the superficial veins, from which should flow into the deep venous system. The congestion causes to expand the superficial venous sinuses and deform. The same fate has befallen the venous connections between surface and depth, the so-called perforating veins, and in the later stage then also the deep veins.

Varicose veins are most commonly affected in leg veins. There are some biological factors associated with this ailment like the family history, congenital weakness of the vein wall, female gender, increased hormonal influences during pregnancy, congenital abnormalities of the venous valves, increasing age and lifestyle related factors such as physical inactivity, obesity, standing occupations, constricting clothing, tendency to constipation and to some extent taking the pills for contraception. In addition, closures of deep vein blood clots by phlebothrombosis can lead to varicose veins. Phlebothrombosis has got very different causes. In certain diseases, vessels can become inflamed, or it changes to the clotting of the blood which favors the formation of blood clots in the deep veins of the legs.

During pregnancy it increases the risk of thrombosis. Varicose veins in other parts of the body like the Hemorrhoids or piles at the anus are not strictly varicose veins, but are often referred to as such. The small vessel cushion at the lower end of the intestine may under the same conditions, also favor the Varicose Veins, assume pathological proportions: about system-related connective tissue weakness, constipation with increased pressing pressure during bowel movements, disabled back-flow of blood during pregnancy.

Infrequently varicose veins appears on testicles it is called Varicocele. Varicoceles are believed to be caused by defective valves in the veins within the scrotum, just above the testicles. The change may occur in childhood and lead to different symptoms to later infertility. Not infrequently, the varicocele forms back over time by themselves – even if no special cause exists.

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https://www.nhlbi.nih.gov/health/health-topics/topics/vv/causes

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