When you’re sick, you’ll often produce more phlegm, and might notice it’s thicker or a different colour: white, green, yellow or maybe even brown. What can this phlegm – also called mucus, snot, ...

Lung infections and lung cancer share symptoms like cough and breathlessness, but differ significantly. Infections arise ...

Tonsil stones, those small white or yellow lumps at the back of your throat, may seem harmless but can cause bad breath, ...