Final answer:
Scale refers to flaky dead skin, while seborrhoea involves the overproduction of sebum leading to skin disorders like seborrheic dermatitis and acne. Sebum normally lubricates the skin and hair, but its excess can cause oily skin and a range of dermatological issues.
Step-by-step explanation:
Scale, often seen in skin conditions such as psoriasis or seborrheic dermatitis, refers to the flakes of dead skin that form on the surface layer due to excessive shedding. Seborrhoea is related to the overproduction of sebum, an oily substance secreted by the sebaceous glands in the skin to keep it moist. When this overproduction happens, it can result in the skin becoming oily and can lead to inflammations such as seborrheic dermatitis, which appears as moist, scaly skin inflammation, particularly on the scalp.
Sebum plays an essential role in maintaining healthy skin and hair by lubricating them, but its overproduction can lead to various skin disorders, including acne, characterized by infected sebaceous glands. Proper care and treatment can help manage the excessive production of sebum and the skin scaling associated with these conditions.