Man lost in Victorian national park

A man is lost in a Victorian national park.

Henry Wright, 63, failed to meet a friend after a bushwalk in the Mount Macedon Ranges on Sunday.

Police made contact with Mr Wright on his mobile phone and he told them he had become disorientated.

They have now lost contact with him and have serious concerns for his welfare because he has a medical condition and requires medication.

Police Search and Rescue crew are co-ordinating the search involving the Air Wing and local police.