What Causes Eczema on the Soles of the Feet?

Eczema manifests in various forms, and lesions on the trunk are often accompanied by other dermatological changes. While eczema can occasionally occur on the soles of the feet, diagnosing “plantar eczema” requires careful differentiation from two other common conditions. So, what causes eczema on the soles of the feet?

Causes of Plantar Eczema

Eczema affecting the soles is frequently triggered by exposure to external allergens—such as contact substances or certain foods. Clinically, it may present with scattered vesicles, erythematous patches, and papules. In the acute phase, localized erosion and exudation may occur. Lesions are typically symmetrical and associated with pruritus of varying intensity. Additionally, fungal infection (e.g., tinea pedis) can mimic eczema, causing itching and scaling. Importantly, inappropriate use of topical corticosteroids—commonly prescribed for eczema—may exacerbate and spread fungal infection.

In addition to wearing well-ventilated footwear, treatment for plantar eczema should be individualized. For example, if exudation is present, cool compresses with a 3% boric acid solution may be applied; if no exudation is observed, topical corticosteroid ointments may be used.

After developing eczema on the feet, maintaining skin cleanliness is essential. The affected area should be gently washed daily with water, or disinfected using antiseptic agents—for instance, hydrogen peroxide may be applied locally to help alleviate symptoms. Furthermore, oral antihistamines are recommended for symptomatic relief. If standard antihistamines prove insufficient, short-term systemic corticosteroids may be considered under medical supervision.