It is advisable to see a doctor for phlegm and throat congestion in the following situations: Persistent or worsening symptoms: If your symptoms of phlegm and throat congestion persist for more than a week or worsen over time, it is recommended to seek medical attention. This could indicate an underlying condition that requires further evaluation and treatment. High fever: If you develop a high fever along with phlegm and throat congestion, it may indicate a more severe infection, such as a bacterial infection. A doctor can assess your condition and prescribe appropriate antibiotics if necessary. Difficulty breathing or swallowing: If you experience difficulty breathing or swallowing due to excessive phlegm or throat congestion, it is crucial to seek immediate medical attention. These symptoms could be indicative of a serious condition that requires prompt evaluation and treatment Blood in phlegm: If you notice blood in your phlegm, it is important to consult a doctor. While it may be due to minor causes like irritation or dryness, it could also indicate a more serious underlying issue that needs to be addressed. Recurrent or chronic symptoms: If you frequently experience phlegm and throat congestion or if the symptoms persist for an extended period, it is advisable to see a doctor. Chronic or recurrent symptoms may be associated with allergies, sinusitis, or other underlying conditions that require medical management. Remember, a healthcare professional is best suited to evaluate your symptoms, provide an accurate diagnosis, and recommend appropriate treatment options based on your individual circumstances.