ACD stands for Allergic Contact Dermatitis, which is a type of occupational disease that occurs when the skin comes into contact with a substance that triggers an allergic reaction. This can happen in various work environments where employees are exposed to allergens such as chemicals, metals, plants, or other irritants. Symptoms of ACD can include redness, itching, swelling, and blistering of the skin. Treatment typically involves avoiding the allergen and using topical corticosteroids or other medications to manage symptoms.