The skin on the hands is thin and more prone to damage, especially as we age. Minor bumps or unnoticed trauma can lead to purplish marks, known as purpura, which often resolve on their own without treatment. These spots are typically less than 1 cm in diameter and may fade over time, akin to a bruise.
2. What Actinic (Senile) Purpura Is—and Why It Targets the Hands
Actinic purpura, also known as senile purpura, is a common condition that primarily affects older adults. It occurs due to the thinning of the skin and weakening of blood vessel walls, often exacerbated by sun damage over the years.
This condition is characterized by dark purple or red spots on the hands and forearms, where the skin is most exposed to the sun. These spots are caused by blood leaking from fragile capillaries under the skin, and while they can be cosmetically concerning, they are typically harmless and do not require medical treatment.