The document outlines the indications for tonsillectomy and divides them into three categories: absolute, relative, and as part of another operation. Absolute indications include recurrent throat infections, peritonsillar abscesses, tonsillitis causing febrile seizures, and tonsil hypertrophy causing airway obstruction or difficulty swallowing. Relative indications include being a carrier of diphtheria or streptococcus. Tonsillectomy may also be performed as part of another operation like palatopharyngoplasty for sleep apnea or glossopharyngeal neurectomy.