Donald Trump is suffering from a chronic vein condition, the White House announced on Thursday, after days of speculation regarding photographs showing bruising on the US president's hand.
After recently experiencing swelling in his legs, Trump underwent a "comprehensive exam" including vascular testing, according to White House Press Secretary Karoline Leavitt.
Leavitt said Trump's bruised hand was consistent with "tissue damage from frequent handshaking" while taking aspirin, which she said is "part of a standard cardio-vascular prevention regimen".
Trump, 79, has regularly touted his good health and once described himself as "the healthiest president that's ever lived".
The president's recently discovered vein condition is called chronic venous insufficiency, which occurs when leg veins fail to pump blood to the heart, causing it to pool in the lower limbs, which can then become swollen.
Veins and valves "propel the blood up and out of the leg" and back toward the heart, Dr Meryl Logan, assistant professor of vascular surgery at the University of Texas at Austin told the BBC.
Blood flowing from the legs to the heart is moving against gravity, which can make that process more difficult.
"So what chronic venous insufficiency is, is when those veins and valves don't work and blood goes backwards down the legs," she said.
Oldest US president ever inaugurated
Leavitt said that there was "no evidence of deep vein thrombosis or arterial disease" and that all results from the test were "within normal limits".
According to a note from White House physician Sean Barbabella released to reporters, the condition is "benign and common", especially in people over age 70.
Additional testing showed "no signs of heart failure, renal impairment, or systemic illness" in Trump, Barbabella said in the note, which confirmed the information from Leavitt's earlier briefing.
Overall, Trump is in "excellent health", the doctor wrote.
Photographers captured what appeared to be Trump's swollen legs during the Fifa Club World Cup final in New Jersey on 13 July, with subsequent photos taken earlier this week showing his bruised hands during a meet with Bahraini Prime Minister Salman bin Hamad bin Isa Al Khalifa at the White House.
A bruise on the president's hand had previously been photographed during a meeting with French President Emmanuel Macron in February.
His swollen legs and bruising prompted online speculation and rumours that the president may have been experiencing an illness that hadn't been made public.
Following an annual physical exam in April, Barbabella wrote that Trump "exhibits cognitive and physical health".
Trump was 78 years and seven months old when he was sworn in for his second term in January, making him the oldest president to ever be inaugurated as US leader.
What to know about chronic venous insufficiency
Doctors told the BBC they agree with Barbabella's assessment on the severity of chronic venous insufficiency.
"It can be associated with serious conditions, but in and of itself it is not a serious condition, and one that is very common," Dr Matthew Edwards, chair of the Department of Vascular Surgery at Wake Forest University, told the BBC.
"People in his age (group), I would say probably somewhere between 10 and 35% of people would have this."
Experts say other risks include being overweight, having a history of blood clots, and having jobs that require patients to be on their feet for long durations.
Wearing custom-made medical-grade compression stockings can help manage the condition, and experts also recommend patients elevating their legs at night.
"I tell my patients to use a good creamy lotion all over their legs and feet every day, and then controlling other potential risk factors such as obesity," Dr Logan said.
The president's bruised hand
Chronic venous insufficiency only affects the lower part of the body, so the condition is unrelated to the bruising seen on the president's hand, which generated speculation in recent days.
The president's doctor said the bruising was a result of handshaking and a side effect of him taking aspirin, a medication which can help prevent heart attacks, blood clots, and strokes.
Dr Edwards said he agrees with the White House doctor's explanation that Trump's aspirin intake along with his age could be responsible for the bruising.
"We are all more prone to bruising as we get older, and you see that a lot in people that take aspirin and other blood-thinning agents."
"I'm sure it could if someone squeezes your hand hard enough, (you could get a bruise)," Dr Edwards said.
"That would be a pretty stiff handshake."
What is chronic venous insufficiency?
Chronic venous insufficiency, or CVI, occurs when the leg veins become damaged and don’t work as they should.
“The veins in our legs have one job,” Stewart said. They work against gravity to push used blood out of the legs through muscle contractions.
When these veins don’t work, typically due to damaged valves, it can cause blood to pool in the legs and lead to symptoms like swelling and ulcers.
According to the Cleveland Clinic, other symptoms also include achy or tired legs; burning, tingling or “pins and needles” sensation in your legs; cramping in your legs; discolored skin that looks reddish-brown; swelling in your lower legs and ankles (especially after standing a while or at the end of the day); flaking or itching skin on your legs or feet; full or heavy feeling in your legs; leathery-looking skin on your legs; ulcers; and varicose veins.
What causes chronic venous insufficiency?
Most cases of CVI are due to genetics, Stewart said, but certain risk factors can increase a person’s chance of developing the condition.
These risk factors include a history of deep vein thrombosis, varicose veins or a family history of varicose veins, obesity, smoking and tobacco use and sitting or standing for long periods, according to the Cleveland Clinic.
Women are more likely to develop venous insufficiency because pregnancy is another risk factor, Stewart said. The chances of developing the condition also increase with age. Trump celebrated his 79th birthday on June 14.
Can you treat or prevent venous insufficiency?
Damaged veins cannot be repaired, Stewart said, but certain treatments can alleviate symptoms in patients.
Patients can undergo vein closures, which is when doctors close the veins that aren’t working. These veins can be closed with glue, heat lasers or by injecting medicine, Stewart said. Performing vein closures is done by ultrasound guidance, so it doesn’t require opening up the leg or putting the patient under anesthesia.
Although most cases of CVI are attributed to genetics, Stewart said patients can reduce their chances of developing the condition by avoiding prolonged sitting, wearing compression socks and following a generally healthy lifestyle.
White House physician Barbabella's memo did not discuss whether Trump is receiving any medical treatment to address the vein condition.
BBC