PART 1: WHY DO MY TOES, ANKLE, AND FEET HURT AT NIGHT? VENOUS DISEASE

One of the many questions I receive as a vascular surgeon is why do my feet hurt at night?  Though this question may seem simple, every person is different. Before I can provide you with “real” solutions to what’s causing this pain and what can be done to stop it, I need to evaluate multiple factors to understand “Why” this pain exists.  Over the next few weeks, I am going to explore the most common reasons for foot pain at night and why people can have pain in their feet at night caused by venous disease.

For the majority of patients Raynaud’s syndrome, Arterial disease, and Diabetic foot disease explain most of the reasons why people experience pain in their feet at night.  Though pain from problems with bones and muscle can play a role, pain due to these causes usually worsens during the day and with use, not when a patient is resting or lying flat.

In part one of this four-part series, I am going to discuss pain at night caused by VENOUS DISEASE.

Let’s start with a refresher on our bodies “plumbing” (Specifically, how does blood circulate around my body.)

  • Veins are blood vessels that bring blood BACK from the feet to the heart.
  • Arteries on the other hand are the blood vessels that bring blood FROM the heart to the feet.

Veins have specialized structures called one-way valves that allow blood to go up towards the heart but not back down towards the feet.  As we age, veins become dilated (start to leak) because the valves no longer seal properly. These leaky valves allow blood to fall back towards one’s feet which results in an increase in pressure within the veins at the ankle and just above the legs. Gravity tugs on the blood in our veins bringing it down to our feet which causes this increase in pressure

Interestingly, because of the curve that the veins take at the level of the ankle to enter the foot, the increase in pressure is not transmitted directly to the foot and toes.  The increase in venous pressure at the ankle typically results in

  • Varicose veins,
  • Swelling,
  • Dark skin discoloration from the leaking of red blood cells into the skin, and, in the worst cases
  • Ulceration.

Even without ulceration, however, the pain related to swelling and discoloration can be very severe.

People during their normal daily lives spend most of their days either standing or sitting.  Because of this, during the day gravity works in both positions to facilitate the pooling of blood around one’s ankles.  When patients come to me with pain in their feet, I always ask specifically if the pain is localized in the calves and ankles.  When pain is localized to the calves and ankles, I confirm a venous etiology by performing a physical exam and finding varicose veins, swelling, dark skin discoloration and/or ulcers between the ankle and the knee.

Pain that is reported in the foot and/or toes without the physical exam findings of varicose veins, swelling, dark skin discoloration, and/or ulcers between the ankle and the knee is NOT likely to be from a venous cause!  Though vein problems may sound or seem like a rare disease for those who have never had venous disease, patients with vein problems are one of the most common consults I see as a vascular surgeon.  Does foot pain wake you up at night? If you have any of the symptoms or appearance of the leg that I described above, please do not hesitate to call our office on 408-376-3626 to schedule an appointment.

One Final Note:

Though causes from the bones and muscles can play a role, foot pain that worsens at night is rarely due to these causes.  Often pain related to problems with bones and muscles worsen during the day and with use, not when any given patient is resting or lying flat.

Clues that can guide me as a vascular surgeon to the cause include throbbing and aching pain versus numbness and tingling associated with tenderness or pain located in the toes versus pain located in the ankle or just above the ankle in the leg.

 

Dr. Ignatius H. Lau

Vascular Surgeon

Dr. Ignatius Lau grew up in Portland, Oregon. He attended the University of Washington in Seattle for college and Stony Brook University in Long Island for medical school. He then went on to train in vascular surgery at Mount Sinai Hospital in New York City. During his time in New York, he performed over 1600 cases involving aortic, peripheral, venous, and carotid surgery. He has a special interest in limb salvage and treating patients with peripheral arterial disease and has extensive training and experience in treating the full spectrum of vascular diseases. Dr Lau was also very active in medical research during his training, ultimately finishing with twelve peer reviewed manuscripts. During his training in New York he met his wife, Lisa, who is a practicing endodontist. Together they love to hike, try new restaurants, and travel.

WOUND CARE

Millions of Americans suffer from wounds that don’t heal. It’s a problem most don’t even think about until they or a loved one develops this type of wound. After all, every one of us has fallen or hurt ourselves with a resulting wound. It generally hurts for a little, we put a little Neosporin or a band-aid on it, and forget about it. Pretty soon, it is gone, and there is a little or big scar in its place. However, as we get older, and develop medical issues, this healing may not happen. A wound that has been “open” for more than four weeks, is called a chronic wound, and often needs the special attention of a wound care center. In these centers, team of specially trained nurses and doctors use a variety of diagnostic and therapeutic tools to help promote healing.

Several different problems can contribute to wound healing. The most common of these is a circulation issue. Either the arteries are blocked that supply oxygen and nutrients to help heal the wound, or the veins that promote drainage of toxins and fluids are not functioning properly. This can occur either because they have leaky valves, or because they too are blocked. In general, it has been discovered that about 70% of wounds seen in wound care centers have an underlying vascular issue. This problem is most often an issue with leg or foot wounds. For this reason all of these should be consulted on by a vascular surgeon, a specialist in treating circulation problems. Simple tests, most of which are not invasive, can reveal problems in the arteries and veins. It is very important to do this, because treating these issues alone can greatly improve the wound healing rate.

Other issues that can contribute to wound healing problems include diabetes, poor nutrition, infection, pressure on the wound, and certain medications (such as steroid use). These can often be addressed by the wound care specialists and thus improving the ability of the wound to ultimately heal.

Silicon Valley’s South Bay Vascular Center and Vein Institute doctors are recognized as the leading wound care physicians in the greater San Francisco Bay Area. Dr. Kokinos is the medical director at both the Verity/O’Connor Wound Care Center in San Jose and St Louise Hospital Wound Care Center in Morgan Hill, CA. and is recognized as the regional expert in the greater San Francisco Bay Area.