How is nail fungus different in people with diabetes?

Nail fungus can make a nail yellow, white, brown, thick, crumbly, or separated from the nail bed. Diabetes does not make every nail change fungal, and injury, psoriasis, or other conditions can look similar. Reduced feeling in the feet may hide pressure or a small wound caused by a thick nail or tight shoe. Circulation or healing problems can make breaks in the surrounding skin more troublesome. The concern is the whole foot, not just the nail.

Arrange a clinician’s assessment before using strong treatments or trimming a thick nail aggressively. Keep feet clean and dry, change socks when damp, and wear shoes with enough room for the toes. Check the feet and between the toes regularly, using a mirror if needed, and avoid walking barefoot. Do not cut into the skin or try to remove the nail yourself if sensation is reduced. A clinician may confirm the cause and coordinate treatment with diabetes and foot care.

Contact a clinician promptly for redness, warmth, swelling, drainage, a new wound, increasing pain, black or rapidly changing colour, or fever. Seek urgent care for spreading redness, severe swelling, or feeling significantly unwell. These signs can indicate a foot infection or another problem requiring quicker treatment, even if the nail change began gradually.

Ask whether the nail has been tested or examined for fungus, whether a podiatry review is appropriate, and which treatment is safest with your medicines, liver health, sensation, and circulation. Ask how often your feet should be checked.