Causes and Diagnoses

Causes and Diagnoses of Varicose Veins

The exact cause of varicose veins is not known. If vein valves become stretched and do not close tightly, blood can pool in the lower legs. Pooled blood increases the pressure against the vein walls. This increased pressure may also cause the veins to stretch further and bulge. Little muscle support in the superficial veins and weak vein walls may be contributing factors.

Varicose and spider veins are primarily a genetic condition. They are not caused by walking in high heels, crossing your legs, standing for long periods of time or wearing knee-high socks.

Risk factors may include:

  • Congenital vascular malformations
  • Family history
  • Faulty or absent venous valves (inherited or acquired)
  • History of blood clots 
  • Deep vein thrombosis
  • Hormonal factors in women
  • Obesity
  • Pregnancy

Tests

An ultrasound test, such as a venous duplex scan, can detect the cause and extent of varicose veins.

Vein Center at Northwestern Memorial Hospital
675 N. Saint Clair St. 
Galter Pavilion, 19th Floor, Suite 100
Chicago, IL 60611

Contact Us
To schedule an appointment or inquire about services, please call 312.695.VEIN (695.8346).
Urgent, after hours Phone: 312.926.2000 , and ask for the interventional radiology fellow on call.
Fax: 312.695.2236

Office Hours: 
Monday-Friday: 8 a.m. - 4:30 p.m.
Saturday-Sunday: closed

Referring Physicians
For consultation or to refer a patient call 312.695.VEIN (695.8346)


Vein Center at Northwestern Lake Forest Hospital
800 N. Westmoreland Rd., Suite 205 
Lake Forest, IL 60045 

Contact Us 
To schedule an appointment or inquire about services, please call 312.695.VEIN (695.8346). 
Urgent, after hours Phone: 312.926.2000, and ask for the interventional radiology fellow on call. 
Fax: 312.695.2236 

Office Hours 
Tuesday: 8 a.m. - 4:30 p.m. 
Thursday: 8 a.m. - 3 p.m. 

Referring Physicians
For consultation or to refer a patient call 312.695.VEIN (695.8346).


Vein Center at Northwestern Medicine Central DuPage Hospital
25 N. Winfield Rd., Suite 103
Winfield, IL 60190

Contact Us
To schedule an appointment or inquire about services, please call 630.933.4487. 

Office Hours
Monday-Friday: 8:30a.m. - 4:30p.m. 
Saturday-Sunday: closed

Vein Center at Northwestern Medicine Delnor Hospital
351 Randall Rd, Suite 200 
Geneva, IL 60134

Contact Us 
To schedule an appointment or inquire about services, please call 630.933.4487.

Office Hours 
Monday-Friday: 8:30a.m. - 4:30p.m.
Saturday-Sunday: closed