Physiotherapists have coined the term 'wallet-neuropathy' for the lower back pain caused by men sitting down (such as when driving or in the office) on wallets always carried in their back trouser pocket.

The condition is triggered by the wallet pressing on sciatic nerves in the back and can lead to pain or numbness in the lower leg, ankle or foot.

The condition is a form of sciatic neuropathy, since it affects the sciatic nerve. But it's becoming so common that it has even been given other names — hip-pocket syndrome or wallet neuropathy.

According to experts, there's an explosion of 'wallet neuropathy' as men damage key nerves by sitting down with their wallets in their back pocket.

Take heart, chaps, there's a simple cure — get your wallet out more often.