Fissure vein

Fissure vein is when blood gets stuck inside your body and can't flow properly. This usually happens in your legs because they have to work hard to carry your body weight around. When your legs get tired, the blood can start to get backed up and can't flow smoothly through your veins. This can cause a big bump or a "fissure" to form in your vein.

It's like when you try to pour a lot of water into a small cup – the water can't fit and spills out. When too much blood is trying to flow through a small space in your veins, it can't fit and causes a bump.

Sometimes, a fissure vein can be painful because the bump or the extra blood can press on nearby nerves. But most of the time, it's not harmful and can go away on its own.

To prevent fissure veins, it's important to move your body and stretch your legs often. You can also wear compression stockings or elevate your legs to help the blood flow better.