skin thickening; hyperkeratosis
Medical term for abnormal thickening of the outer layer of the skin, often due to friction or pressure.
Skin thickening is often seen on the soles of the feet and heels.
This cream is effective in improving hyperkeratosis.
角質 means 'keratin' or 'horny layer', while 角質肥厚 specifically refers to the thickening of that layer.
肥厚 is a general term for 'thickening' or 'hypertrophy' of tissue, not limited to skin.
Compound of 角質 (かくしつ, 'keratin, horny layer') and 肥厚 (ひこう, 'thickening, hypertrophy').