Final answer:
Seborrheic Dermatitis is the inflammation of the sebaceous glands, identified by red, flaky skin in areas like the scalp and hairline. It is different from dandruff, psoriasis, and eczema, which are other common skin conditions.
Step-by-step explanation:
Inflammation of the sebaceous glands characterized by red, flaky skin in the scalp and hairline is known as 3) Seborrheic Dermatitis. This is one of the many common skin disorders, alongside conditions such as acne and eczema. Seborrheic dermatitis specifically involves inflammation in areas rich in sebaceous glands, like the scalp, causing symptoms such as red and flaky skin.
For comparison, dandruff is a mild form of seborrheic dermatitis that only causes flaking of the scalp. Psoriasis is a skin disease that causes itchy or sore patches of thick, red skin with silvery scales in various areas, and eczema is an allergic reaction resulting in dry, itchy patches of skin, often accompanied by swelling, flaking, and sometimes bleeding.
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