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  • Cyclical vomiting syndrome

    Find out about cyclical vomiting syndrome including the symptoms, causes, how it's diagnosed and the treatment and support available.

  • Cushing's syndrome

    Cushing's syndrome is a collection of symptoms that develop as the result of very high levels of a hormone called cortisol in the body.

  • Crohn's disease

    Read more about the symptoms, treatment and complications of Crohn's disease, which is a long-term condition that causes inflammation of the lining of the digestive system.

  • Creutzfeldt-Jakob disease

    Find out about the different types of Creutzfeldt-Jakob disease (CJD), and what causes the condition and how it's treated.

  • Corticobasal degeneration

    Read about corticobasal degeneration (CBD), a rare condition where brain cells become damaged over time and certain sections of the brain start to shrink.

  • Coronary heart disease

    Find out about coronary heart disease (CHD), including the main symptoms, causes, treatments and prevention. CHD is a major cause of death in the UK and worldwide.

  • Contact dermatitis

    Read about contact dermatitis, a type of eczema that causes inflammation of the skin when you come into contact with a particular substance.

  • Congenital heart disease

    Find out about the different types of congenital heart disease, why it happens, the signs and symptoms and how it's treated.

  • Sudden confusion (delirium)

    NHS information about sudden confusion (delirium), including how to tell if someone is confused and when to get medical help.

  • Complex regional pain syndrome

    Find out about complex regional pain syndrome (CRPS), a poorly understood condition where a person experiences persistent severe and debilitating pain.