What should you know about deep cracks in heels?

A heel fissure is a split in thickened skin, often along the back or underside of the heel. Dryness makes the outer layer less flexible; pressure from standing or walking can then pull the skin apart. Open fissures may sting, catch on socks or bleed when the heel bears weight.

Open footwear, long periods on your feet and repeated friction can make the problem harder to settle. Scaling or itching between the toes, on the sole or around the sides of the foot can also occur with athlete's foot, which needs a different treatment approach. See [Dry Skin](/symptoms/dry-skin/) and [Cracked Skin](/symptoms/skin-cracking/) for related symptoms.

Wash with lukewarm water, pat dry, and apply a rich emollient while the skin is still slightly damp. Pay particular attention to the heel edges. At night, socks can help keep the moisturiser in contact with the skin. Emollient therapy is explained in more detail in [Emollient Therapy](/treatments/medical-dermatology/emollient-therapy/).

Avoid cutting the fissure, using a sharp tool or pulling away attached skin. Do not scrub an open crack. Wear well-fitting shoes that reduce heel rubbing and avoid walking barefoot on rough surfaces. A clinician or pharmacist can advise whether a product that softens thick skin is suitable, especially if the split is deep or tender.

Arrange medical assessment if the crack is deep, repeatedly bleeding, increasingly painful, or not improving with consistent moisturising. Seek prompt care if redness, warmth, swelling, pus, spreading tenderness or fever develops, as these can signal infection.

People with diabetes, reduced sensation, poor circulation or a weakened immune system should seek advice early for an open heel crack rather than treating it alone. A clinician can examine the fissure, check for athlete's foot or another skin condition, and recommend a safe plan.

Ask what is causing the fissures, whether there are signs of infection or athlete's foot, which moisturiser is appropriate for open skin, and how to protect the heel while it heals. Mention any diabetes, numbness, circulation problems or medicines that affect your skin.