What causes dark circles under the eyes?
- Thin lower-eyelid skin that shows the vessels beneath, which increases with age.
- Brown pigment in the skin, more common in darker skin types and after sun exposure.
- A hollow or tear trough that casts a shadow as fat and bone change with age.
- Puffiness and fluid that shade the skin below, often worse on waking.
- Tiredness, allergies, eye rubbing and, less often, anaemia or hormonal change.