Concerns about President Donald Trump’s health have resurfaced after a noticeable red mark appeared above his left eyebrow during a public appearance on March 11.

The circular mark was visible as Trump spoke with reporters outside the White House before leaving with Press Secretary Karoline Leavitt. The White House did not immediately explain what caused it, leading to questions and speculation across social media about whether the mark was a bruise or the result of an injury.

Trump has previously been seen with bruises on his hands, which he has attributed in part to his use of aspirin. His physician, Dr. Sean Barbabella, has said Trump takes 325 milligrams of aspirin daily, a dose that can make bruising more likely.

The eyebrow mark was also noticed shortly after another red mark appeared on Trump’s neck during a March 2 Medal of Honor ceremony. Barbabella later said that the neck redness was connected to a topical treatment Trump was using for preventive skin care.

Trump has also previously explained another bruise on his hand as the result of accidentally hitting it against furniture during a trip to Switzerland.

Questions about Trump’s health have appeared periodically in connection with other medical updates. Last year, the White House disclosed that he had been evaluated for swelling in his lower legs and diagnosed with chronic venous insufficiency. Doctors said testing found no evidence of deep-vein thrombosis, arterial disease, or heart failure.

The March 11 appearance also attracted attention for reasons unrelated to Trump’s health. During remarks in Kentucky, the White House livestream briefly experienced a technical problem, while audio difficulties later disrupted part of his speech. The event was also temporarily interrupted when a spectator fainted behind the president and medical personnel responded.

While the new eyebrow mark generated considerable discussion online, no official explanation for its cause had been publicly provided at the time.