<prompt> Frequent blushing erethism is associated with poisoning ofMercuryLeadPhenolic acidCarbolic acid  <response>: Mechanism of toxicity:Mercury reacts with sulfhydryl SH groups, resulting in enzyme inhibition and pathologic alteration of cellular membranes.Clinical presentation:Severe chemical pneumonitis and noncardiogenic pulmonary edema.Acute gingivostomatitis may also occur.Chronic intoxication:Classic triad Tremor Gingivostomatitis. Metallic tasteFrequent blushing erethismPain in the extremities, often accompanied by pinkish discoloration and desquamation pink disease 