Hillary Clinton's medical history – and her tendency to keep personal and medical information far from view – is coming in for new scrutiny following revelations that the candidate got diagnosed with pneumonia Friday in advance of her stumble in New York.

Clinton's stumble, caught on camera Sunday after she had to leave Sept. 11th anniversary memorial services after about an hour and a half, was the latest in a line of health spats that have made it into the news during her career.

'Antibiotics can take care of pneumonia. What's the cure for an unhealthy penchant for privacy that repeatedly creates unnecessary problems?' asked President Obama's former message guru David Axelrod in a tweet Monday – a message promptly retweeted by Trump's campaign manager Kellyanne Conway.

Below is a compilation of Clinton's ailments and health incidents that have entered the public record:

Clinton's medical history – and her tendency to keep personal and medical information far from view – is coming in for new scrutiny following revelations that the candidate got diagnosed with pneumonia Friday

Hillary's dramatic collapse in New York on Sunday is prompting new examination of her health – as well as how her aides have closely guarded information

1998 Blood Clot

Clinton's first known blood clot occurred in 1998, while she was still first lady.

Clinton experienced symptoms while attending a fundraiser for Sen. Charles Schumer of New York, who would soon become her Senate home-state colleague. Her right foot swelled up to the point where she couldn't put on her shoe.

Clinton got quietly taken to the National Naval Medical Center in Bethesda for treatment at the time. She was found to have 'a big clot' blood clot behind her knee, Clinton wrote in her memoir, 'Living History.'

She called it 'the most significant health scare I've ever had,' the Washington Post noted.

According to her physician, Mt. Kisco physician, Lisa Bardack, Clinton was advised at the time to take Lovenox, described as a short-acting blood thinner, when she took flights. The meds were discontinued when she went on Coumadin.

2009 Blood Clot

Clinton had a second blood clot incident in 2009. The episode was described by her doctor in a 2015 letter.

The doctor didn't provide a detailed description of the event. Rather, she wrote that Clinton's 'past medical history is notable for a deep vein thrombosis in 1998, 2009 and a concussion in 2012.

Clinton takes a daily blood thinning medication for her deep vein thrombosis.

Clinton, a frequent flier whose staff catalogued her pursuit of the overall mileage record as secretary of state, may have exacerbated the problem through her extensive air travel.

Frequent jet travel can exacerbate blood clots, which is why some people make sure to walk around the cabin on long flights

2009 Elbow Fracture

Clinton had to work from home for a while after she fractured her elbow during a fall in 2009, CNN recounted. She fell at the State Department on the way to the White House, and went to George Washington University hospital for treatment.

She underwent a two-hour surgical procedure.

'She is working from home. She is already taking some calls, and I'm sure starting to learn the limits of movement - how well you can text with one arm in a sling,' quipped then spokesman P.J. Crowley at the time, in an early reference to Clinton's communications habits.

Clinton was pictured wearing a sling emblazoned with the seal of the State Department when she returned to work. She also was photographed providing left-handed hand shake with a visiting Palestinian dignitary owing to her condition. She has showed no visible signs of lingering problems related to the injury.

HARD KNOCKS: Clinton got a fractured elbow in 2009, but still managed to negotiate with Hondouran leaders, and, according to her spokesman, text with one hand

2012 Blood Clot and Concussion

Clinton got a bad stomach bug and fainted at her home in Washington in 2012, an event that led her to get a concussion. Information about what exactly had happened emerged only slowly over time.

As her doctor put it, 'In December 2012, Mrs. Clinton suffered a stomach virus after traveling, became dehydrated, fainted and sustained a concussion.'

The then-secretary of state wasn't seen in public between Dec. 7th and when she left the hospital in New York January 2, 2013.

Clinton experienced 'double vision for a period of time and benefited from wearing glasses with a Fresnel Prism,' a special corrective lens, her doctor wrote in a letter voluntarily released to the media in 2015 as part of Clinton's presidential campaign. Her concussion 'resolved within two months,' Bardack wrote.

In 2014, Bill Clinton revealed that the injury 'required six months of very serious work to get over.' The former president called it a 'terrible concussion'

Clinton was diagnosed with a blood clot in the brain, transverse sinus venous thrombosis, and began anticoagulation therapy, her doctor wrote.

Clinton had to work from home and postpone planned testimony before a House Benghazi committee.

Clinton leaves New York Presbyterian Hospital with husband Bill and daughter Chelsea on January 2, 2013. The secretary of state, had not been seen in public since Dec. 7

Hypothyroidism

Clinton also suffers from Hypothyroidismrefers to an under-active thyroid gland, resulting in a lack of important hormones.

Clinton's doctor identified the condition in her 2015 letter, but did not state for how long Clinton has suffered from the condition. She takes a medication called Armour Thyroid.

Allergies

Clinton suffers from 'seasonal allergies,' according to her physician. It isn't known for how long she has suffered from allergies, although Clinton herself has cited her allergies when she has developed a cough – including on-stage during public events.

Her doctor states that Clinton is taking antihistamines, which treat the effects of allergies.

2016 Collapse and Pneumonia Diagnosis

Clinton had to leave a Sept. 11th service in New York early after spending 90 minutes at the ceremony. Her staff first cited heat and exhaustion, then ultimately revealed that Clinton had been diagnosed in pneumonia on Friday.

Clinton campaign spokesman Brian Fallon did not reveal what type of pneumonia Clinton has during a Monday interview on MSNBC, but said Clinton would be putting out more medical information.

'She was put on antibiotics and advised to rest and modify her schedule,' said Bardack in a statement released at the end of the day. While attending the event, 'she became overheated and dehydrated. I have just examined her and she is now re-hydrated and recovering nicely.'

Hours after Clinton was taken away from the Sept. 11th ceremony, her office released a doctor's statement. 'Secretary Clinton has been experiencing a cough related to allergies. On Friday, during follow-up evaluation of her prolonged cough, she was diagnosed with pneumonia. She was put on antibiotics, and advised to rest and modify her schedule. While at this morning's event, she became overheated and dehydrated. I have just examined her and she is now rehydrated and recovering nicely,' Clinton's doctor, Lisa Bardack, said in a written statement Sunday.'

'There's no other undisclosed condition. The pneumonia is the extent of it,' Clinton campaign spokesman Brian Fallon told MSNBC.

Fallon also acknowledged: 'I think in retrospect we could have handled it better in terms of providing more information more quickly.'

Campaign manager Robby Mook, speaking of the 90 minute delay before the press was told Clinton's status after she left the New York event, said Monday: 'We wish that that had been a lot shorter and that's on us.'

Clinton herself tweeted Monday: 'Thanks to everyone who’s reached out with well wishes! I’m feeling fine and getting better,' signing the missive with the letter 'H.'

Clinton had to shake with her left hand following her 2009 injury. She is pictured here with Palestinian Authority Salam Fayyad

Clinton campaigned in New York in June along with aide Huma Abedin. She was diagnosed with pneumonia Friday, according to her office

Clinton is 68 and would be 69 when she assumed office, second to Ronald Reagan in age taking office. Donald Trump is 70, and has released few details about his medical background.

'She participates in a healthy lifestyle and has had a full medical evaluation, which reveals no evidence of additional medical issues or cardiovascular disease. Her cancer screening evaluations are all negative. She is in excellent physical condition and fit to serve as President of the United States,' her doctor wrote.

The letter released by Clinton's physician details her 2012 concussion and double vision