Question

Hi, I have an 8 year old female Basset Hound who I believe might have an internal parasite infection. She has had a re-occurring diarrhea issue for the past month, skin rash/scratching, and a one time vomiting episode this past week. Doing my own research, I had thought she had Chronitc Gastritis brought on by food allergies. A charcoal based bath seems to have eleviated the rash. The vet wanted to put her on benedryl and anti-diarrheal regimen as a first approach.   Starting yesterday thru midday today, she stopped eating and drinking. Then, late midday, she wanted to eat again and drink. I gave her a very bland and small diet of plain crackers, low sodium chicken broth, sweet potato and a little salmon.   She pooped about an hour later. There was traces of pink and red in the stool. After 10 minutes, I noticed movement in the stool and possibly something whitish there. I'm thinking hookworm or tapeworm that's caused some bleeding?