👉 Veiner is a medical condition that occurs due to an abnormal increase in blood vessels or veins. This can occur due to several reasons, such as genetics, trauma, or certain medications. Veins are small, thin blood vessels located in the skin, and they help circulate blood throughout the body. When these veins become enlarged, they may block blood flow to important organs and tissues, leading to symptoms such as swelling, bruising, and pain. In severe cases, veiner can cause damage