Question

repetitive stresses on an area of the skin may cause it to thicken and locally. This is called

Answer 1

Repetitive stresses on an area of the skin may cause it to thicken and locally.This is called CALLOSITY OR TYLOMA.

in Dermatology.

• CAUSES
• Continued friction
• Pressure
• physical or chemical irritation
• Calluses form when mild but repeated injury causes cells of the epidermis(the outermost layer of the skin) to become increasingly active,giving to a localised increase in tissue.
• The resulting hardened,thickened pad of dead skin cells at the surface layer of the skin serves to protect underlying tissues.
• The thickening process is known as hyperkeratosis.
• It is seen in Bony prominence
• calluses are most seen hands and feet.
• calluses are usually flat and painless
• when it become conical shape and penetrating to deeper layer of skin causing pain when pressed.
• It is called corn.
• FACTORS affects are extrinsic and intrinsic factors.
• Extrinsic factors
• poorly fitting foot wears,tight socks,thin soled-shoes,walking bare foot etc...
• Intrinsic factors
• abnormal gait,obesity,variety of foot deformity (eg;hammer toe, mallot toe, claw toe etc..)