Venous insufficiency of the lower extremities is a condition linked to the weakening of the superficial or deep vein walls. It leads to a dysfunction of the internal valves, which interferes with the blood flow returning to the heart and causes the formation of varicose veins.
Venous insufficiency are generally superficial.
Deep venous insufficiency are most of the time secondary to a thrombosis or a congenital defect.
A visible sign of venous insufficiency, varicose veins are dilated and tortuous veins inside which valves, if they exist, no longer play their anti-reflux role. Tle enlarged veins are found in the superficial venous system. According to their calibre, one speaks of:
- Truncular varicose veins,
- Or reticular varicose veins
Muscular hernia not to be confused
with varicoses veins
Intra-dermal dilatations of the venous plexus, thread veins are caused by venous hyper-pressure or capillary fragility.
Their calibre is variable:
- Red telangiectases have a small diameter (0.1 to 4mm) and are very superficial.
- Blue telangiectases are located deeper in the dermis and have a more important calibre (0.4 to 2 mm).
Telangectiases do not only pose a cosmetic problem but may be the sign of a deeper venous deficiency.