Generally used with roundworms - abdominal pain, irritability, stifled chest w/heat, vomiting after eating, cold hands and/or feet. Roundworms may be observed in vomit.
Also has a broader application in chronic diarrhea, IBS, or other digestive disorders characterized by both heat and cold. Symptoms may be chronic diarrhea, abdominal pain (often that is better w/heat).
With parasites the tongue and pulse are less critical, with chronic conditions the Tongue may be red with a white coating.