Hyperkalaemia is a medical condition where the potassium levels in the blood are higher than normal. Synonyms that can be used for hyperkalaemia include high potassium levels, excess potassium, hyperpotassaemia, and elevated potassium. Some other related terms that can be used to refer to this condition include hyperkalemia syndrome and hyperkalaemic periodic paralysis. In many cases, hyperkalaemia is caused by kidney problems, but it can also be a result of medication side effects or hormonal imbalances. It is important to note that hyperkalaemia can lead to serious health complications, such as arrhythmias and heart failure, and timely medical intervention is crucial for effective treatment.