venous insufficiency refers to the incompetency of venous valves and resultant varicosity. Am I right?

Venous insufficiency describes a chronic clinical condition characterized by dilatation of lower extremity veins, valvular insufficiency, and venous hypertension, regardless of the cause.

Zerrin Pulathan, what about the chronic clinical conditions characterized by

a venous compression of cranial nerves

due to dilatations of radicular veins?

Can you explain why in such conditions, no investigations into valvular insufficiencies of internal jugular veins and short periods of venous hypertension that affect their intracranial tributary vessels are done?

Are there no reasons to differentiate such and other venous damages affecting different parts of the body regarding their cause?

Dr. Raham Bacha and Zerrin Pulathan:

Isn't "venous insufficiency" all too vague an expression for setting apart abrupt central venous pressure excesses that impact the vascular periphery?