multiple chemical sensitivity; MCS
Medical term for a condition where exposure to low levels of chemicals causes symptoms like headache or fatigue.
Patients with multiple chemical sensitivity may feel unwell from the smell of perfume or detergent.
ＣＳ is the clinical shorthand, while 化学物質過敏症 is the full medical name for multiple chemical sensitivity.
Compound of 化学物質 (chemical substance) + 過敏症 (hypersensitivity).