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  • Heart block

    Find out about heart block, including the symptoms, causes, types, how it's diagnosed and the treatment and support available.

  • Pseudoephedrine: medicine for a stuffy or blocked nose

    NHS medicines information on pseudoephedrine – what it's used for, side effects, dosage and who can take it.

  • Beta blockers

    Read about a group of medicines called beta blockers, including what they're used for, side effects and what to do if you miss a dose or take too much.

  • Pulmonary embolism

    Read more about a pulmonary embolism, which is when a blood clot blocks a blood vessel in your lungs. It can be life-threatening if not treated quickly.

  • Empyema

    Empyema is the medical term for pockets of pus that have collected inside a body cavity. They can form if a bacterial infection is left untreated, or if it fails to fully respond to treatment. The term empyema is most commonly used to refer to pus-filled pockets that develop ....

  • Acute cholecystitis

    Read about acute cholecystitis, which is inflammation of the gallbladder. It usually occurs when a gallstone blocks the cystic duct.

  • Gallstones

    Gallstones can cause serious problems if they block a bile duct or move into another part of the digestive system.

  • Decongestants

    Decongestants are medicines that can provide short-term relief for a blocked or stuffy nose (nasal congestion). Find out about the different types and who can take them.

  • Heart attack

    Find out about heart attacks, a serious medical emergency in which the supply of blood to the heart is suddenly blocked, usually by a blood clot.

  • Transient ischaemic attack (TIA) - Causes

    A transient ischaemic attacks (TIA) happens when one of the blood vessels that supply your brain with oxygen-rich blood becomes blocked.