Patient presents with symptoms consistent with pertussis, also known as whooping cough.  The patient reports a cough lasting for [duration], characterized by [cough description; e.g., paroxysmal coughing fits, inspiratory whoop, posttussive emesis].  Onset of cough was [onset date].  Associated symptoms include [list symptoms; e.g., rhinorrhea, sneezing, low-grade fever, apnea in infants].  Patient's immunization history for pertussis is [documented immunization status; e.g., up-to-date, incomplete, unknown].  Physical examination reveals [relevant findings; e.g., clear lung sounds, mild erythema of the pharynx, conjunctival injection].  Differential diagnoses considered include [list differential diagnoses; e.g., bronchitis, respiratory syncytial virus (RSV), influenza, pneumonia].  Based on the clinical presentation and reported symptoms, a presumptive diagnosis of pertussis is made.  Laboratory testing, including a nasopharyngeal swab for pertussis PCR and culture, has been ordered to confirm the diagnosis.  Treatment is initiated with [medication; e.g., azithromycin] for [duration] to reduce the duration and severity of symptoms and prevent transmission.  Patient education provided on the importance of isolation precautions, including covering coughs and sneezes, frequent handwashing, and avoiding contact with vulnerable individuals.  Follow-up scheduled in [duration] to assess response to treatment and monitor for complications such as pneumonia, seizures, or encephalopathy.  ICD-10 code A37.0 Pertussis is assigned.  Patient advised to contact the clinic if symptoms worsen or new symptoms develop.