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Kidney failure

Acute kidney failure (renal failure) or acute kidney injury is when your kidneys suddenly stop working properly. This means that they are unable to remove salt, water and waste products from the bloodstream.

Lactose intolerance

Lactose is the natural sugar found in cow's milk and the milk of other mammals such as goats and sheep. Lactose intolerance is when the digestive system can’t break down lactose. This causes unpleasant symptoms such as bloating, wind and diarrhoea.

Lambdoid craniosynostosis

Lambdoid craniosynostosis is a very rare type of non-syndromic craniosynostosis and occurs when one of the lambdoid sutures at the back of the head fuses before birth. This page from Great Ormond Street Hospital (GOSH) explains the causes, symptoms and treatment of lambdoid craniosynostosis and where to get help.

Landau Kleffner syndrome

Landau Kleffner syndrome (LKS) is a rare epilepsy. It occurs in children usually between the ages of three and nine years and is characterised by loss of language skills and silent electrical seizures during sleep. It may be associated with convulsive seizures and additional difficulties with behaviour, social interaction, motor skills and learning. It is not usually life-threatening, but can impact greatly on quality of life unless it responds well to treatment. It occurs in approximately one child in a million. The disease is more common in boys and does not usually run in families.