Some poisons cause a change in skin color after ingestion, inhalation, or exposure to them. Some of them are following:
Pink or Cherry Red Color Skin
👉 Cyanide
Blue Color Skin
👉 Cyanosis
👉 Nitrates
👉 Nitrites
👉 Aniline dyes
👉 Phenazopyridine
👉 Amiodarone
👉 Argyria (Silver)
👉 Arsenic
👉 Alkaptonuria
👉 Gold Therapy
Red Color Skin
👉 Anticholinergic Toxicity
👉 Boric Acid
👉 Carbon Monoxide