🫁 Respiratory system (all ages)
Breathing problems in all age groups
Symptoms
Cough
Cough: Protective Reflex of the Airways Cough is one of the most common symptoms that brings people to a doctor. It is a complex protective reflex act, whose main goal is to clear …
Runny nose
Runny nose (Rhinitis): Why does it flow from the nose? Runny nose, or rhinitis, is inflammation of the nasal cavity's mucous membrane, accompanied by one or more symptoms: nasal co…
Nasal Congestion
Nasal Congestion: Swelling Mechanism Nasal congestion is the feeling of difficult nasal breathing that occurs not because of mucus buildup (as in runny nose), but due to swelling o…
Sore throat
Sore throat (Pharyngitis/Tonsillitis): Causes and mechanisms Sore throat is an extremely common symptom that arises from inflammation of the mucous membrane of the throat (pharyngi…
Breathing difficulties
Breathing difficulties (Shortness of breath/Dyspnea): When it is dangerous Shortness of breath, or dyspnea, is a subjective feeling of insufficient air and difficulty breathing. It…
Wheezing
Wheezing (Wheezing): Whistling sound of narrowed airways Wheezing that whistles on exhalation (wheezing, візинг) — is a high‑pitched, musical sound that occurs when air forcefully …