Limitations
At presentation, patient stabilization, history taking concerning
timing, the quantity of paraquat ingested and detailed examination of
presenting signs and symptoms (the presenting condition of the lips,
tongue mouth, and oropharynx) is prudent. The absence of erythema,
ulcerations, or lesions should not completely exclude the possibility of
mucosal injury, and close oral assessment and observation should be done
promptly and routinely. This is mainly because the appearance of
pathology is not always consistent and is dependent on the dosage and
the concentration of the paraquat ingested. As previously mentioned, the
appearance of lesions and ulcers may occur from hours to 2-5 days after
ingestion.