Jack Osbourne's announcement that he has been diagnosed with a form of multiple sclerosis (MS) is the latest case of a celebrity or famous name deciding to make public knowledge what is clearly already a huge private challenge.
Famous names from Kylie Minogue and Cheryl Crowe to Martin Kemp and Russell Watson have all at various times revealed intimate details of conditions and treatments they have undergone, sometimes not until a long time afterwards, but often impressively forthrightly.
Jack Osbourne has resolved that life will go on as usual following his MS diagnosis
Obviously, for some there is no choice in the matter. Fans around the world were horrified when Christopher Reeve was thrown from his horse and suffered a neck injury that changed his life. They were equally inspired as he spent the rest of his life drawing attention to the need for advancements in stem cell research, using his fame to take the case of millions of others to the corridors of Washington, and raise millions of dollars through his Foundation.
On the other side of the Atlantic, British TV presenter Gail Porter could have hidden her bald alopecia-affected head under an assortment of wigs, but has opted to reveal her condition, no doubt inspiring many others in the process.
And it does mean, by coming forward and controlling how the news is reported to the curious masses, these public faces have one less problem on their hands - of dodging prying questions and camera lenses poking around doctors' doorways as they go about their business of managing their condition. Even the ever-snapping jaws of the press seem to be able to control themselves a bit and conduct themselves relatively respectably in the face of such circumstances, shared and openly discussed.
Michael C Hall accepted his Golden Globe for Dexter, in the middle of gruelling chemo for Hodgkin's Lymphoma
Such celebrity association, involuntary though it may be, no doubt helps those charities struggling to find a platform for sometimes neglected conditions. Michael J Fox has put Parkinson's Disease on the big and small screen - and by continuing to work while managing his condition through medication, so he shouts the message that other similarly-affected people shouldn't be written off either.
And having such a high-profile name attached to any cause no doubt makes it easier to create fundraisers, charity events and raise funds for research, treatments and help fill many of the gaps that we would never otherwise hear about.
Even the professionally-curmudgeonly Christopher Hitchen remarked on the emotionally uplifting benefit of receiving messages of good wishes and encouragement from so many strangers. As he noted in an interview with Jeremy Paxman, one thing he had learnt from his long battle for health, that if there was the opportunity for a kind word to be shared, everyone should take that opportunity as the benefit was "immense and unexpected".
So best wishes to you, Jack Osbourne, and all of those who've found similar solace in public support...
Delta Goodrem - was diagnosed at 18 with Hodgkins Lymphoma, an announcement that incited an outpouring of support from her particularly Australian fanbase.
In the two decades since Michael J Fox's Parkinson's diagnosis, the popular actor has continued to work on both TV and film, as well as writing two autobiographies and creating a foundation. He has received many awards for his humanitarian work, and says that his illness has in countless ways improved his life.
Olivia Newton-John's breast cancer diagnosis and treatment has inspired the Australian singer to work tirelessly on behalf of others, including walking the Chinese wall to raise funds for her new Wellness Centre in a Melbourne hospital.
Leslie Ash became the unfortunate figurehead of the MRSA bug that plagued various UK hospitals after she caught the superbug. The actress was awarded £5m in damages, and still walks with a stick.
TLC's T-Boz (Tionna Watkins) was diagnosed as a child with sickle cell anaemia, which gave her a reduced life expectancy by doctors she has continued to confound.
Christopher Reeve was paralysed following his fall from a horse in 1995. Until his death a decade later, the actor dedicated his efforts to raising funds and advocating for political support to removing the blocks to essential stem cell research for spinal injuries.
Anastasia - the American singer discovered she had breast cancer during a standard mammogram ahead of breast reduction surgery in 2003. Following her own treatment, she immediately launched the Anastasia Fund to promote awareness among younger women.
Michael C Hall had a mixed year in 2010. He received a Golden Globe for his role in <em>Dexter</em>, which he accepted during his treatment for Hodgkin's Lymphoma. The following April, he announced himself once again fit for work.
Anthony Andrews - was hospitalised in 2003 for "a salt imbalance". This came about as the unexpected consequence of drinking too much water while performing on stage during a hot weather spell in London.
Russell Watson has recently resumed his career after being struck down ttwice with life-threatening brain tumours. He has recorded his first album since treatment, and credits his surgery with his new, deeper voice.
Martin Kemp - former singer and EastEnders star had two brain tumours in the 1990s, and had pioneering treatment for the second. He has been acting since, and returned to the road with his band Spandau Ballet.
Cheryl Crowe has not had a smooth time of it - going through treatment for breast cancer in 2006, and then this year announcing she has a brain tumour.
Gail Porter's bold, bald head has become a staple of red carpets following the presenter's decision to shave it all off, when her alopecia returned. She has made a documentary about the process too.
JEntourage star Jeremy Piven spun the rumour mill into action when he mysteriously dropped out of a Broadway play. He later explained he'd had mercury poisoning, caught from a culprit offering of sushi.
Michael Douglas received intensive treatment for throat cancer - and the stress of watching her husband's gruelling experience ignited Catherine Zeta Jones' bipolar disorder for which she attended a clinic in America.
Mariah Carey's husband Nick Cannon was struck down with liver failure in January this year. Following his recovery, he has made public the lifestyle changes he needs to make to ensure continued health.
Sharon Stone - suffered a stroke in 2001, the seriousness of which was played down at the time, but which actually saw bleeding into her brain for nearly a fortnight. The actress only regained feeling in her left leg months later.
Madonna brought several bones in 2005 when she fell from a horse, and suffered further bruising falling again in 2009...
... as did TV presenter Lorraine Kelly, in a frightening fall in February this year, when she was learning to ride. Her horse stamped on her, and she lost 3 pints of blood.
Cheryl Cole - malaria charities everywhere found their profiles shot up when the Girls Aloud singer caught the illness during a trip to Africa in 2010.
Kylie Minogue moved to Paris for treatment for breast cancer following her diagnosis in 2005. She eventually gave some intensely revealing interviews about this dark period in her life, and said the 5-year anniversary would be a very important moment.
... while sister Dannii has had to battle with an underactive thyroid condition.
Peter Andre suffered from meningitis during his marriage to Katie Price, the symptoms of which first led him to think he merely had a bad bout of flu...
... while Katie Price had a cancer scare in 2002 after having a malignant growth removed from her finger.