In hepatitis A, it is common to have temporary changes in stool due to reduced bile flow, which can sometimes make stools look pale or contain mucus-like material. A white or tissue-like substance may be mucus or undigested fat, but it is important to inform your gastroenterologist, especially if stools become very pale, you develop severe abdominal pain, vomiting, or worsening jaundice. Continue your prescribed treatment, stay well hydrated, and avoid self-medication.