What type of poisoning is characterized by pink, cherry-red tissues and symptoms such as dizziness and nausea?

The type of poisoning characterized by pink, cherry-red tissues, along with symptoms such as dizziness and nausea, is carbon monoxide poisoning. This condition occurs due to the binding of carbon monoxide to hemoglobin in red blood cells, forming carboxyhemoglobin. This binding restricts the blood's ability to carry oxygen, which can lead to tissue hypoxia—a decreased oxygen availability in tissues. The cherry-red appearance is a distinguishable clinical feature observed in carbon monoxide poisoning and is a direct result of the altered oxygen binding capacity of hemoglobin.

The symptoms of dizziness and nausea stem from the brain and other vital organs being deprived of adequate oxygen, highlighting the importance of recognizing carbon monoxide exposure, particularly in enclosed or poorly ventilated spaces where it is commonly produced, such as from fuel-burning appliances or vehicles.