noun
Medical term for sensitivity to light, often used in contexts such as skin reactions, eye conditions, or drug side effects.
この薬は光感受性を高めることがある。
This medicine can increase photosensitivity.
Compound of 光 (light), 感受 (sensitivity, reception), and 性 (property, nature). The exact historical derivation is uncertain; the term follows standard Sino-Japanese word formation patterns.