Final answer:
The correct completion for the list of common scalp disorders is Psoriasis. Psoriasis is a significant scalp condition that manifests with red, scaly patches and is recognized in dermatology and trichology.
Step-by-step explanation:
The correct option that best completes the list of common scalp disorders is B) Psoriasis. Psoriasis is a chronic skin condition that can also affect the scalp, leading to scaling and inflammation. Other common scalp disorders include dandruff, which is often managed with specialty shampoos, and various parasitic infections, such as tinea capitis (scalp ringworm) or tinea barbae (barber's itch).
Some scalp conditions are caused by skin disorders like seborrheic dermatitis and can cause flaking and itching. In the field of dermatology and trichology, scalp psoriasis stands out as a significant condition that manifests with symptoms such as red patches of skin covered with thick, silvery-white scales on the scalp.
Psoriasis is a chronic autoimmune condition that affects the skin, including the scalp, causing red, scaly patches that may be itchy and uncomfortable. It is characterized by an accelerated skin cell turnover, leading to the buildup of dead skin cells.
Other common scalp disorders include alopecia, which refers to hair loss, and hirsutism, which is the abnormal growth of hair in women.
Therefore answer is B) Psoriasis.