Callushttps://en.wikipedia.org/wiki/Callus
Callus is in gebiet fan dikke hûd dat foarmet as in reaksje op werhelle wriuwing, druk of oare yrritaasje. Calluses binne oer it generaal net skealik en helpe blieren te foarkommen, en biede ek beskerming. Oermjittige formaasje kin lykwols soms liede ta oare problemen, lykas in hûdulceraasje of ynfeksje.

Behanneling ― OTC Drugs
It is wichtich om te soargjen dat it gjin wart is.
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  • Calluses binne oanwêzich op 'e lofter foet (plantar) en rjochter foet (lateraal).
  • Corns (calluses) komme symmetrysk foar op beide fuotten, dêr't druk wurdt tapast of dêr't de skoech drukt tsjin 'e foet. As in ferlykbere lesion optreedt yn in gebiet fan gjin druk, moat in wart wurde fertocht.
References Corns 29262147 
NIH
Corns ûntwikkelje fan werhelle wrijven of druk. Corn is in spesifyk gebiet fan dikke hûd, wylst callus mear ferspraat is. Corns komme faak foar by atleten as minsken mei foetproblemen lykas unjildige wriuwing fan skuon. Se binne ek gewoan yn 'e âlderein, diabetici en amputees. Corns moat wurde sjoen as in symptoom ynstee fan in standalone betingst.
A corn, also known as a calvus, heloma, or focal intractable plantar hyperkeratosis, is a type of callosity. Corns are uncomfortable, thickened skin lesions that result from repeated mechanical trauma due to friction or pressure forces. In the literature, confusing terminology is often used to call different types of hyperkeratotic skin lesions. Nevertheless, a corn should be distinguished from a callus, which is a more diffuse type of callosity. Thus, a corn is a well-delimited focal area of hyperkeratosis. This condition is often seen in athletes and patients exposed to unequal friction force from footwear or gait problems, including the elderly, patients with diabetes, and amputees. It should be regarded as a symptom rather than an effective disease.
 Clavus 31536205 
NIH
Corn , ek wol bekend as in clavus, is in mienskiplike foetkondysje sjoen yn kliniken. It is in dikke gebiet fan 'e hûd feroarsake troch wriuwing of druk, faak pynlik. It is wichtich om it te ûnderskieden fan calluses of wratten. Calluses binne fergelykber, mar misse de sintrale kearn en binne minder pynlik. Behanneling is rjochte op it ferminderjen fan symptomen en it foarkommen fan takomstige mais. It behanneljen fan dizze pynlike tastân kin it libben fan pasjinten sterk ferbetterje, foaral foar âldere as aktive persoanen.
A clavus or clavi (plural) is a frequently encountered condition in the out-patient clinic, known colloquially as a corn. It is one of the many hyperkeratotic lesions of the foot and therefore requires differentiation from other etiologies such as calluses or plantar warts. A clavus is a well-demarcated thickened area of the epidermis that has a central core. This skin lesion is most commonly found on the foot and is often painful. A clavus results from repeated friction, pressure, or trauma to a specific area of the foot. A callus is another hyperkeratotic skin lesion that is similar to a clavus. It is an area of thickened epidermis with less defined borders and is also the result of repeated mechanical stress. Additionally, calluses lack the painful central core seen with clavi. Calluses most commonly present on the hands and feet. The older and the physically active are most commonly affected by clavi. Treatment focuses on symptomatic relief and lifestyle modification to prevent future clavus formation. By treating this painful and sometimes life-altering skin lesion, physicians can have a profound impact on their patients’ lives.