If you’ve ever noticed an unusual growth on your foot and wondered whether it’s a wart, a corn, or something else entirely, you’re not alone. Warts are one of the most commonly misidentified skin conditions we see in podiatry, and the confusion is understandable. They can look quite different depending on where they appear and how long they’ve been there.
What all warts share in common is their cause: the human papillomavirus, or HPV. But beyond that shared origin, different types of warts can behave very differently: in how they look, how deep they grow, how much discomfort they cause, and crucially, how they respond to treatment. Knowing which type you’re dealing with isn’t just a matter of curiosity. It directly shapes the most appropriate course of action.
Plantar Warts
The most frequently encountered wart in podiatry practice, plantar warts develop on the weight-bearing surfaces of the foot, typically the heel or forefoot. Because of the constant downward pressure from walking and standing, these warts tend to grow inward rather than outward, which is what makes them deceptively tricky. On the surface, you might see thickened or roughened skin, and if you look closely, small black pinpoint dots – these are clotted capillaries, a telltale sign that distinguishes warts from corns or calluses. The skin lines around a wart are also typically disrupted, whereas they flow over a corn uninterrupted.
Plantar warts can become quite painful, especially during walking or prolonged standing, and they can deepen over time if left unaddressed.
Mosaic Warts
Mosaic warts are essentially clusters of plantar warts that have merged into a larger, patch-like formation. They tend to look flatter and more spread out than individual warts, and they can cover a surprisingly wide area of the foot. What makes mosaic warts particularly challenging is that they are often more resistant to treatment and tend to be chronic in nature. They frequently develop when plantar warts are left untreated and allowed to spread. Managing them well typically requires a structured, multi-modal approach rather than a single intervention.
Periungual Warts
These warts grow around or beneath the nail, most commonly on the toes. They can be easy to dismiss at first glance, since they may be mistaken for an ingrown toenail or a fungal infection. Over time, however, periungual warts can distort nail growth and cause real discomfort, particularly when wearing enclosed shoes. Their location makes them one of the more difficult types to treat, and in some cases, they can spread under the nail plate if not addressed early.
Common Warts (Verruca Vulgaris)
While more often associated with the hands, common warts can occasionally appear on the feet or ankles. They tend to be raised, dome-shaped, and have a rough or cauliflower-like surface with well-defined edges. Unlike plantar warts, they grow outward and aren’t as heavily influenced by walking pressure, which makes them somewhat easier to identify visually. They can spread through direct contact, so prompt attention is worthwhile.
Flat Warts (Verruca Plana)
Flat warts are smaller and smoother than most other types, lying relatively flush against the skin. They’re often flesh-coloured or only slightly darker, and they tend to appear in multiples. Because of their subtle appearance, they’re frequently dismissed as ordinary skin blemishes. They’re less common on weight-bearing surfaces of the foot but can spread through friction or repeated contact with the skin.
Why Getting the Right Diagnosis Matters
Each of these wart types differs not just in appearance but in depth, structure, and how they’re likely to behave over time. A flat wart and a deep plantar wart may both be caused by HPV, but they call for entirely different treatment approaches. Some respond well to topical therapies, while others may require more targeted interventions. Treatment timelines also vary considerably.
A thorough podiatric assessment – which may include visual examination, dermatoscopic inspection, pressure response testing, and an evaluation of the surrounding skin and foot biomechanics – helps ensure that what you’re dealing with is correctly identified and that the most appropriate therapy pathway is chosen.
If you’ve spotted something on your foot that doesn’t feel quite right, the best next step is a proper clinical assessment. At DC Podiatry, our principal podiatrist Leighton Cheng brings specialist experience in wart identification and management – from common plantar warts to more complex mosaic and periungual presentations. We’re conveniently located in the heart of Orchard Road, easy to get to whether you’re coming from work, home, or anywhere in the city.
Book your appointment at dcpodiatry.com.sg or reach us on WhatsApp at +65 9366 8855. Getting the right diagnosis early makes everything that follows simpler.
