Amy Winehouse briefly leaves her London home to hand out ice pops to fans and photographers, London, England - 11.06.08

The troubled singer was admitted into a private clinic in Marylebone, London on Monday (16Jun08) after she collapsed in her home in the British capital.

Tests to determine the cause of the collapse have so far proved inconclusive, but on Tuesday (17Jun08), the 24-year-old was allegedly warned by health experts her alleged drug addiction will end her life - unless she manages to kick her habit once and for all.

And now it has been reported medical experts have aligned her symptoms, including an alleged irregular heartbeat and a chest infection, with the deadly disease.

A source tells British newspaper The Sun, "Amy is in a bad way. Doctors are still struggling to control her heartbeat but the chest condition has been really worrying them.

"She'd been suffering horrible coughing fits and hurling up blood for a while but refused to be examined.

"Doctors now believe it is tuberculosis and are doing more tests to be certain."

The infectious condition is said to be common among drug addicts and heavy drinkers, as they have a reduced immunity and are more vulnerable to infection.

Source: WENN