👉 The term "posttussive" is a medical term that refers to a type of cough characterized by persistent or repeated episodes of dry, phlegmous sputum. In some cases, this can be accompanied by a decreased ability to breathe and difficulty in swallowing. The cause of posttussive cough is not known but it may be due to underlying health conditions such as asthma, chronic obstructive pulmonary disease (COPD), or other respiratory issues. Posttussive cough