A 58-year-old female patient presented with erythema, swelling, erosions, yellow-white crusts, and severe pain in both hands for one day. Distinct from typical cases of allergic contact dermatitis, the condition progressed rapidly, characterized by leather-like crusts resembling adhered lime and scattered erosions. After one month of treatment, the lesions resolved almost completely, leaving residual scars and mild functional impairment. This case report describes occupational exposure to lime sulphur, a strongly alkaline pesticide known to cause severe irritant contact dermatitis, and emphasizes the importance of proper handling procedures, enhanced protective measures, and systematic clinical management following exposure.