There are two causes are there for the same probably. One is the pressure of the growing uterus on the abdominal veins. That increase the pressure in the leg veins. So they become tortuous. That is varicose. The other reason is related to increased level of pregnancy hormones. The exact contribution of the both is not known to me. You may ask the lady to sleep on the side to prevent the compression of the abdominal veins. But you can not ask her to maintain that position during the sleep.
A varicose vein is an enlarged, twisted superficial vein. They can occur in almost any part of the body, but mostly seen in the lower leg area. It is caused by incompetent venous valves (valves that do not work well and have a hard time moving the blood back towards the heart). When this happens the blood pools and the veins swell. This can cause pain in the feet, ankles and legs, swelling, and ulcers on the skin.
Varicose veins can be acquired or congenital. They can be caused or aggravated by pregnancy, obesity, and prolonged periods of standing (working in a position that requires you to be on your feet for great lengths of time).
Abnormally swollen, distended, and knotted veins, usually in the subcutaneous tissues of the leg.
Varicose veins can appear following pregnancy, thrombophlebitis, congenital blood vessel weakness, or obesity, but is not limited to these conditions.
There are several causes for Varicose veins. The most common cause is seems to be a family history of Varicose veins. Then you have pregnancy, a possible blood clot and diet.
Cadmium toxicity.
incompetent venous valves
straining legs too much
Venous insufficiency is a condition in which blood pools in the vein because the valves have become incompetent.
I think those varicose veins are like blood vechiles which go on your legs. I don't know that causes of them. But webmd, a website would or could know that.
Varicose veins are filled with an abnormal amount of blood. Nerve irritation is what causes them to itch. They press against adjacent nerves as they dilate.
Varicose veins.
Varicose veins are called dialated veins
The superficial veins are the blood vessels most often affected by varicose veins and are the veins seen by eye when the varicose condition has developed.
Varicose veins can develop in the deep veins also. Varicose veins in the superficial veins are called primary varicosities, while varicose veins in the deep veins are called secondary varicosities.
Can you get a varicose vein on your brain
Surgical stripping of varicose veins is successful for most patients. Most do not develop new, large varicose veins following surgery. Surgery does not decrease a person's tendency to develop varicose veins.
my varicose veins have turned black and i am getting worried? Whats happening?
varicose veins
You will need a dermatologist for varicose veins. Your regular Doctor can refer you to a specialist.