Psoriasis on feet: what to know

Foot psoriasis may affect the soles, heels, tops of the feet or spaces around the toes. A psoriasis patch can be red or darker than nearby skin, with a dry scale over it. The skin may itch, sting, peel or split, especially where standing and walking add pressure. Deep cracks can become tender and make ordinary movement difficult. A fungal infection and contact dermatitis can look similar, so a clinician may examine the pattern, nails and other skin areas before confirming the cause. Psoriasis itself is not contagious.

Use the treatment prescribed for your skin rather than scraping or cutting thickened areas. Apply a plain, fragrance-free moisturiser regularly, especially after washing, and give it time to absorb before putting on socks. Choose breathable footwear with enough room for the toes; soft socks can reduce rubbing. Wash gently with lukewarm water and pat dry, including between the toes. Avoid picking scale, harsh foot files and products that burn. Keep a note of triggers such as friction, skin injury or a recent illness, and show changes at a dermatology appointment.

Arrange an assessment if foot changes are new, spreading, repeatedly cracking or stopping you from walking normally. Seek prompt care for increasing warmth, swelling, drainage, rapidly worsening pain or fever, because broken skin can become infected. A painful, swollen toe or new stiffness in the feet also deserves review, as psoriasis can occur with joint inflammation. Do not assume every peeling or scaly patch is psoriasis; an examination helps select safe treatment.

Could this be psoriasis, a fungal infection or another rash? Which product should I use on thick soles or open cracks? How should I protect the skin while walking or exercising? What changes would mean I should return sooner?