Question 12
? What is abnormal
thickening of stratum
Corneum called?
Answers
Answer:
Hyperkeratosis is the term to describe thickening of keratin in the epidermis, which is the outer layer of the skin. Keratin is a protein found in the outer layers of the skin that helps to protect the body.
Forms
Hyperkeratosis usually occurs in areas of skin that have been irritated or subject to significant pressure, although it can affect any area of the skin. In some cases, a genetic susceptibility may be responsible for causing hyperkeratosis. It can have a varied appearance, depending on the form and cause:
Corns and calluses: these are formed by the buildup of dead skin cells due to frequent rubbing, often on the hands or feet
Warts: these are small bumps, usually on the hands and feet, caused by human papillomavirus (HPV)
Chronic eczema: this condition is due to inflammation of the skin caused by allergies, irritants or other triggers
Lichen planus: patches inside the mouth (white) or on the skin (purplish-blue) due to an abnormal immune response
Actinic keratosis: flat, red patches on the skin caused by excessive exposure to ultraviolet radiation from sunlight
Epidermiolytic hyperkeratosis: thick, scaly skin in a large area that is caused by a genetic mutation
Hyperkeratosis is painless in most cases, although it can cause discomfort, such as when there are corns, calluses or warts in sensitive areas of the skin. Other symptoms may include hair loss and discoloration of the skin.