A chronic skin condition producing red lesions covered with silvery scales isSelect one:a.psoriasis.b.scabies.c.impetigo.d.cellulitis.

Step 1: Break Down the Problem

The question is asking to identify a skin condition that is characterized by red lesions covered with silvery scales.

Step 2: Relevant Concepts

• Psoriasis: This is a chronic inflammatory condition that manifests as red patches of skin covered with thick, silvery scales.
• Scabies: A condition caused by a mite infestation, usually leading to intense itching and rashes, but not characterized by silvery scales.
• Impetigo: A bacterial skin infection that causes red sores, but lacks the typical silvery scale appearance.
• Cellulitis: A bacterial infection of the skin and underlying tissues without the presentation of scales.

Step 3: Analysis and Detail

• Psoriasis is specifically associated with the aforementioned symptoms (red lesions with silvery scales).
• Scabies is known for itching and rash due to mite activity.
• Impetigo presents with crusty sores and is generally more yellowish, lacking silvery scales.
• Cellulitis leads to swollen, red areas but does not have the scale texture commonly seen in psoriasis.

Step 4: Verify and Summarize

Upon reviewing the definitions of the listed conditions, it is clear that only psoriasis aligns with the symptoms of red lesions covered with silvery scales.

Final Answer

a. psoriasis