Miley Cyrus faces long recovery

There was much excitement when Miley Cyrus launched her "Bangerz" tour in Vancouver, British Columbia, in February, but since then the controversial singer has been beset by woes including ending up in the hospital with "a severe allergic reaction to antibiotics." Here are a few other issues that have cropped up along the way:

Katy Perry and Cyrus got in some smooching action during the latter's Los Angeles concert in February. Cyrus tweeted the lip lock, though the pair later got into a beef about the smooch when Perry questioned Cyrus' tongue hygiene during a radio interview in March. They later made up -- via Twitter, of course.

In April 2014, a "Bangerz" tour bus caught fire, according to Cyrus' younger sister, Noah, who chronicled the incident on Twitter.

Tragedy struck in early April with the death of the singer's favorite pooch, Floyd. Cyrus tweeted to her Boston fans in advance of her concert there that she was "beyond miserable." The gift of a new dog from her mother apparently did little to console her, as Cyrus later tweeted that she gave the new dog away to a friend.

On April 15, Cyrus was hospitalized for a "severe" allergic reaction to antibiotics reportedly taken for a bout with the flu and had to cancel some dates. "Kansas I promise Im as (heartbroken) as you are," the singer wrote. "I wanted so badly 2 b there 2night. Not being with yall makes me feel s**ttier than I already do."

• Cyrus' "Bangerz" tour was interrupted when she was admitted to a hospital Tuesday


• She tweets: "can't quit crying i wanna go back on tour"


• Cyrus suffered an "extreme allergic reaction" to an antibiotic for her sinus infection


• Doctor says her illness can last from five to 27 days

(CNN) -- Miley Cyrus could be in celebrity sick bay for another three weeks because of an "extreme allergic reaction" to an antibiotic, her representative said Thursday.

Her illness interrupted her "Bangerz" tour when she was admitted to a Kansas City hospital Tuesday.

Cyrus, 21, tweeted to fans Thursday morning that she is "over the hospital," along with a photo of her lying in bed. She added: "can't quit crying i wanna go back on tour. im meant to be onstage performing for y'all ... not laying in a hospital bed."

She canceled a show in Charlotte, North Carolina, last week because of what was reported to be a flu-like illness. Tuesday's Kansas City and Wednesday's St. Louis shows were also canceled.

The statement sent to CNN by Cyrus' representative did not specifically say it, but it implied that her upcoming shows over the next week -- including Nashville; Louisville, Kentucky; Philadelphia; Uniondale, New York; and Connecticut -- would be off.

"Miley was suffering from a sinus infection during her tour in N.C. a week ago. She was prescribed the antibiotic Cephalexin which she has now suffered an extreme allergic reaction to," the statement said. "This type of extreme reaction can last from five to 27 days in these types of cases.

"She will remain hospitalized and is under a doctor's care until we see some improvement in her condition and is asking for your compassion and privacy at this time. Miley is devastated about missing shows and possibly disappointing her fans."

CNN's Carolyn Sung contributed to this report.