Callus - Callishttps://en.wikipedia.org/wiki/Callus
Callis (Callus) se yon zòn nan po epè ki fòme kòm yon repons a repete friksyon, presyon, oswa lòt iritasyon. Calluses yo jeneralman pa danjere epi ede anpeche ti anpoul, osi byen ke ofri pwoteksyon. Sepandan, fòmasyon twòp ka pafwa mennen nan lòt pwoblèm, tankou yon ilsè po oswa enfeksyon.

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  • Calluses yo prezan sou pye gòch (plantè) ak pye dwat (lateral).
  • Corns (calluses) rive simetrik sou tou de pye yo, kote yo aplike presyon oswa kote soulye a peze sou pye a. Si yon blesi menm jan an rive nan yon zòn ki pa gen presyon, yo ta dwe sispèk yon veri.
References Corns 29262147 
NIH
Corns devlope nan fwote repete oswa presyon. Corn se yon zòn espesifik nan po epè, pandan y ap callus pi gaye. Corns souvan rive nan atlèt oswa moun ki gen pwoblèm pye tankou friksyon inegal nan soulye. Yo komen tou nan granmoun aje yo, dyabetik, ak ampute. Corns ta dwe konsidere kòm yon sentòm olye ke yon kondisyon otonòm.
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 , ke yo rele tou clavus, se yon kondisyon pye komen yo wè nan klinik. Li se yon zòn epè nan po ki te koze pa friksyon oswa presyon, souvan douloure. Li enpòtan pou fè distenksyon ant li ak calluses oswa veri. Kal yo sanble men yo manke nwayo santral la epi yo gen mwens douloure. Tretman vize soulaje sentòm yo ak anpeche mayi nan lavni. Trete kondisyon sa a douloure ka amelyore anpil lavi pasyan yo, espesyalman pou moun ki pi gran oswa aktif.
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.