Why do I bruise so easily on my legs?

By Margaret Hale, Reunoa EditorialLast updated October 26, 2026

Shins are bruise magnets. Coffee tables, bed frames, car doors, the dishwasher door — legs take hits all day, often without you noticing. In older adults, nearly 90% of accidental bruises are on the arms and legs ^[1].

Common reasons legs bruise easily

Shins have no cushion

Skin sits directly on the shinbone, with very little fat or muscle between. Even a light bump squeezes vessels against bone.

Aging skin

Thinner skin and less fat padding leave vessels more exposed ^[2].

Vein problems

When leg veins don't work well (chronic venous insufficiency), blood pools and pressure in small vessels rises. Skin on the lower legs can become fragile, discoloured and slow to heal ^[3]. Over time, this often leaves brown staining — see hemosiderin staining on legs.

Blood thinners and aspirin

They make every leak bigger and longer-lasting ^[4].

Other medicines and supplements

Steroids, NSAIDs, some antidepressants and supplements like fish oil and vitamin E can add to bruising.

Less common causes

• Low platelets or clotting problems — often with pinpoint dots (petechiae) on the lower legs ^[5]
• Vitamin C deficiency — bruising, bleeding gums, poor wound healing
• Liver disease
• Inflamed blood vessels (vasculitis) — raised purple spots on the lower legs ^[5]

A doctor can check these with simple blood tests ^[6].

Legs on blood thinners

On anticoagulants or antiplatelets, shins bruise especially easily because there's no padding over the bone. Bruises are larger and take longer to fade. That's expected. But be alert to two things that need a doctor: a bruise that keeps spreading or becomes very tense and painful (a hematoma), and swelling of one whole calf, which can mean a blood clot even on blood thinners.

Bruising and leg swelling

If your ankles swell by evening, small vessels in the lower legs are under more pressure. Knocks there leave larger marks, and brown staining builds up over time. Compression stockings (after checking with your doctor), raising your legs and walking help both swelling and skin.

Normal vs see a doctor

What helps

1. Pad the hotspots — corners of beds, coffee tables, car door sills.
2. Light trousers or knee-high socks as a buffer.
3. Good lighting at night to avoid bumps.
4. Moisturize shins — they're often the driest skin on the body.
5. For vein problems: ask about compression stockings and leg elevation.
6. Medication review if bruising increased with a new medicine.

Frequently asked questions

Why do I get bruises on my legs without hitting anything?

Usually you did hit something but didn't notice — shins bruise from very light knocks. Blood thinners, thin skin and vein problems make it more likely. Pinpoint dots or bruising elsewhere should be checked.

Can poor circulation cause bruising on legs?

Venous insufficiency makes lower-leg skin fragile and prone to discoloration. It doesn't cause classic bruises directly but contributes to easy marking and brown staining.

What does it mean when your legs bruise easily?

Most often thin skin plus frequent bumps, sometimes medicines. Less commonly, low platelets, vitamin deficiency or liver disease.

Should I worry about bruises on my legs?

Not usually. Worry if they come with pinpoint dots, raised spots, other bleeding, swelling in one leg, or if you feel unwell.

General information, not medical advice. Written by the Reunoa editorial team; Reunoa makes Bruise Defense & Repair Serum. See our editorial policy for how we pick sources and keep product mentions fair.