What sign might indicate the presence of hyperkeratosis?

Rough and scaly patches are a key indicator of hyperkeratosis, which is a condition characterized by the thickening of the outer layer of the skin due to an increase in keratin. This thickening can lead to the formation of rough, dry, and scaly areas on the skin. Hyperkeratosis often occurs in response to friction, irritation, or pressure, and the appearance of rough and scaly patches is a direct result of the skin's attempt to protect itself from external stressors.

Other signs or conditions listed, such as redness and swelling, ocular discharge, or whiteheads, are not characteristic of hyperkeratosis and are typically associated with different skin or health issues. The focus on the texture and appearance of the skin distinguishes hyperkeratosis from these other conditions, reinforcing the significance of recognizing rough and scaly patches as a hallmark symptom.