The Scottish rockers scrapped the remainder of their North American tour dates, including a set at the Coachella festival, last month (Apr13) after Neil fell ill and was advised by doctors to rest up or risk a longterm medical issue.
He has now taken to the band's Twitter.com page to assure fans he is feeling better, and will soon be back onstage.
He writes, "Hi everyone. Thank you for the kind words and best wishes. Almost back to full strength. Can't wait to see you all soon."
The Mountains hitmakers will headline Britain's upcoming Radio 1's Big Weekend festival in Northern Ireland on 25 May (13).