**Core Concept**
Psoriasis is a chronic inflammatory skin disease characterized by abnormal keratinocyte proliferation, leading to the formation of scaly, erythematous plaques. The scales in psoriasis are often silvery and can bleed when removed due to the presence of a thick, hyperproliferative stratum corneum.

**Why the Correct Answer is Right**
The condition described is likely psoriasis due to the presence of silvery scales that bleed on removal, a classic clinical feature of this disease. Psoriasis is associated with an abnormal immune response, involving the activation of T lymphocytes and the release of pro-inflammatory cytokines, which contribute to the inflammation and hyperproliferation of keratinocytes. The scales in psoriasis are composed of a thick, compact stratum corneum that is rich in keratin filaments, which can cause bleeding when removed.

**Why Each Wrong Option is Incorrect**
**Option A:** Pityriasis refers to a group of skin conditions characterized by fine scales, but they do not typically bleed on removal and are not associated with the same level of inflammation as psoriasis.

**Option B:** Seborrhoeic dermatitis is a chronic skin condition characterized by a red, itchy, scaly rash, but it does not typically present with silvery scales that bleed on removal.

**Option D:** Secondary syphilis can present with skin lesions, but they are usually not scaly and do not bleed on removal.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that psoriasis is a systemic disease that can affect multiple organs, including the joints, eyes, and cardiovascular system. Patients with psoriasis are at increased risk of developing cardiovascular disease, so it's crucial to assess their cardiovascular risk factors regularly.

**✓ Correct Answer: C. Psoriasis**