Treatment of Corns and Calluses

Key Differences in Pathology and Treatment

Corns have a hard, yellow nucleus or plug of keratin that extends downward in a cone-shaped point, causing sharp pain, and require more precise removal of the central keratin plug, according to the British Journal of Dermatology 1, 2
Calluses are broader areas of thickened, hard skin without a central core, typically less painful than corns, and need broader paring of the hyperkeratotic tissue, as stated by the British Journal of Dermatology 2

Manual debridement or paring with a scalpel by a trained podiatrist is the primary treatment for both corns and calluses, as recommended by the American College of Cardiology and the British Journal of Dermatology 1, 2, 3
After debridement, apply emollients and non-adherent dressings to protect the debrided skin, according to the British Journal of Dermatology and Praxis Medical Insights 1, 2
Properly fitting footwear with adequate toe box width and height reduces pressure and friction, as suggested by Praxis Medical Insights and Diabetes/Metabolism Research and Reviews 1, 3
Toe separators or silicone orthotic devices redistribute pressure between toes for soft corns, as recommended by Praxis Medical Insights 1
Therapeutic shoes or custom-made insoles are indicated when foot deformity or pre-ulcerative signs are present, according to Diabetes/Metabolism Research and Reviews 3

Diabetic patients or those with PAD require a more conservative debridement approach due to higher complication risk, as stated by Praxis Medical Insights and Diabetes/Metabolism Research and Reviews 1, 3
Corns and calluses are considered pre-ulcerative lesions in patients with PAD and require aggressive preventive management, according to the Journal of the American College of Cardiology 4
Referral to a foot care specialist for ongoing preventive care and surveillance every 1-3 months is recommended for high-risk patients, as suggested by the Journal of the American College of Cardiology and Diabetes/Metabolism Research and Reviews 3, 4
Therapeutic footwear is mandatory for high-risk patients, as stated by the Journal of the American College of Cardiology 4

Daily foot inspection, especially between toes, to identify early lesions, is recommended by Praxis Medical Insights and Diabetes/Metabolism Research and Reviews 1, 3
Daily washing with careful drying between toes prevents moisture buildup, as suggested by Praxis Medical Insights and Diabetes/Metabolism Research and Reviews 1, 3
Never walk barefoot, in socks only, or in thin-soled slippers, whether at home or outside, as recommended by Diabetes/Metabolism Research and Reviews 3
Apply emollients to lubricate dry skin, but not between the toes, according to Diabetes/Metabolism Research and Reviews 3

Never allow patients to self-treat with chemical corn removers or plasters, as this increases infection and ulceration risk, as stated by Diabetes/Metabolism Research and Reviews 3
Do not cut corns or calluses at home—professional care is essential, according to Diabetes/Metabolism Research and Reviews 3
Avoid applying moisturizers between toes, as this increases maceration risk, as recommended by Diabetes/Metabolism Research and Reviews 3

The British Journal of Dermatology recommends applying salicylic acid 15-26% daily after removing the thick keratin layer, with occlusion if possible, for 3-4 months for optimal effect, as an evidence-based topical agent for treating corns and calluses 5
Cantharidin 0.7% solution and trichloroacetic acid 50-80% solution are other keratolytic options that can be applied every 3 weeks up to four times and weekly for up to 8 weeks, respectively, as alternative treatments for corns and calluses 5