Health experts have warned that three red flag symptoms on the feet could be early signs of cardiovascular disease, a condition often dubbed a 'silent killer' due to its subtle onset. The disease claims nearly 18 million lives globally each year, but early detection can be life-saving.
According to the American Academy of Dermatology (AAD), swollen feet, legs, and ankles—medically known as oedema—can indicate that the heart is not functioning properly. The AAD explains that fluid buildup in the lower extremities may extend to the upper legs and groin. The NHS notes that swelling may improve in the morning and worsen later in the day.
Blue toes, or cyanosis, can signal blocked blood vessels. The AAD states that if skin appears blue or purple when warm, it may indicate insufficient oxygen in the blood. Blue toe syndrome occurs when blood vessels are obstructed, potentially leading to tissue death without intervention.
Painful lumps on the toes or fingers, known as Osler nodes, may be a sign of infective endocarditis, a heart infection. While these lumps resolve on their own, the underlying bacterial infection requires antibiotic treatment, and sometimes surgery.
