Tinea pedis may involve all surfaces of the feet, but most commonly involve the area between the toes.
Symptoms include itching, burning, and stinging, but tinea pedis can also be asymptomatic.
People who experienced atopic dermatitis as children may develop eczema on the hands and feet as adults.
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Eczema on the feet is more likely to affect the plantar (bottom) surfaces.
It is especially common among military personnel.
Less common causes of shoe allergy include various glues, resins, metals, and pigments.
These include thiuram mix, carba mix, mercaptobenzothiazole, mercapto mix, and black rubber mix.
Chromate
Chromate salts are used in the tanning process for leather.
Avoidance of chromate means wearing non-leather shoes.
This resin is used to glue together various parts of shoes, particularly leather and rubber parts in shoes.
These could include chromate, cobalt, a dye called disperse blue 106, or other pigments.
