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Peripheral Arterial Disease (PAD)

What is Peripheral Arterial Disease (PAD)?

Periphery arterial disease (PAD) is a common vascular condition where narrowed arteries, usually due to plaque buildup, reduce blood flow to the legs and may lead to symptoms like leg pain when walking or cramps. This condition, when diagnosed early, is treatable. 

Anyone can develop PAD, though your risk increases with age. It common affects the buttocks, legs or feet and sometimes, the arms. It may also indicate a possible heart attack or stroke. 


What are the symptoms of Peripheral Arterial Disease (PAD)?

The first symptoms for PAD is usually leg discomfort when you are active, this is due to your arteries being unable to keep up with your muscles' increased demand for blood. This discomfort extends to cramping or numbness in your calves, thighs or butt, when engaging in physical activities.

As PAD worsens, you may experience leg pain even when resting. However, many suffering from PAD have no symptoms and it is only diagnosed through screenings. 

Other possible symptoms include:

  • Foot and toe ulcers: These are wounds on your skin that may get infected and take a long time to heal.
  • Changes in skin colour or temperature: A blockage in your arteries may cause your skin to turn purple, green, black or pale. Your skin may also feel cool to the touch or have "pins and needles". Seek medical attention immediately if you notice these signs. 


What causes Peripheral Arterial Disease (PAD)?

Atherosclerosis, the gradual buildup of plaque in your arteries, is the most common cause of PAD. This buildup narrows the space where blood can flow. 

Other common causes of PAD include:

  • Swelling and inflammation of blood vessels 
  • Injury to the arms or legs
  • Changes to the muscle or ligament anatomy
  • Radiation exposure


What are the risk factors of Peripheral Arterial Disease (PAD)?

You have a high risk of developing PAD if you:

  • Age. PAD is more common in those above age 65, or after 50 if you have risk factors for atherosclerosis.
  • A family history of PAD, heart disease or stroke
  • Diabetes
  • Hypertension
  • High cholesterol
  • Obesity
  • Smoking


How is Peripheral Arterial Disease (PAD) diagnosed?

Ankle-Brachial Index (ABI)
A common test used to diagnose PAD. It compares the blood pressure in the ankle with the blood pressure in the arm.

Blood Test
A blood test may be done to check for factors that increase the risk of PAD, such as high cholesterol or high blood sugar.

Imaging Test
Your healthcare provider may conduct an ultrasound or angiography to look at how blood moves through the blood vessels and to check for blockages in the arteries.