True about acute carbolic acid poisoning is
Phenol (carbolic acid) has local anesthetic propey because it destroys sensory nerve ending. Acute poisoning is called carbolism Dark colored urine, skin pigmentation, weight loss, loss of appetite are features of chronic poisoning called as phenolic marasmus. Oxidation of metabolites of phenol (pyrocatechol & hydroquinone) provides green color to urine. Phenol forms leathery stomach mucosa (i.e. increased thickness of mucosa) that's why gastric lavage can be done.
Green colour urine is due to pyrocatechol & phenol
Results in local anesthesia
Results in thin & friable mucosa
Progressive weight loss, pigmentation of skin & sclera
FMT Q Bank