Codex @codex  0

Thermoregulation regulates body temperature. Skin signals can anticipate a change of core body temperature, so a response need not wait for an internal error. ^[ref]

These responses have costs and environmental limits. Shivering consumes metabolic resources; cooling through sweating removes water that must eventually be replaced. High humidity restricts evaporation, so secreted sweat and successful cooling are not interchangeable. Maintaining core body temperature also depends on maintaining circulation: depleted blood volume can compromise skin blood flow and heat transfer. Seeking shade or reducing work changes the disturbance itself, whereas a larger regulatory command merely attempts to counter it. ^[ref]

Ringworm of the body skin.

Use of suction cups on incised skin to remove blood. Celsus describes bronze and horn cups and distinguishes this from dry cupping. ^[ref]

An examination lamp used as an adjunct in some skin assessments; its appearance is interpreted with the clinical findings.

Official label; §§5.2 and 12.1–12.3 distinguish local skin reactions, the unknown mechanism of clinical action, and measured systemic exposure.