Cricket Australia on Friday said that Australian paceman Mitchell Johnson toe infection had spread to Johnson's right leg and required further treatment.
The infection, which forced him out of this month's world Twenty20 tournament in Bangladesh, began from a cut suffered during Australia's series-clinching third Test triumph over South Africa in Cape Town earlier this month.
"He is recovering from an infection that began in his right big toe, before affecting his right leg," CA said in a statement.
"He is being managed by a team of medical specialists.
"Depending on how quickly he recovers, Johnson's next scheduled commitment is the 2014 Indian Premier League where he will represent Kings XI Punjab which finishes at the end of May."
Johnson's place in the Australian T20 squad was filled by Doug Bollinger, who joined the side in Bangladesh this week ahead of Sunday's opening game with Pakistan.
It has been an arduous few months for Johnson, who spearheaded Australia's 5-0 Ashes Test whitewash of England and then the 2-1 victory over South Africa.