Brain aneurysms affect about 1 to 2 percent of people, with approximately 30,000 cases of ruptured aneurysms occurring annually in the United States12. While many aneurysms remain unruptured and asymptomatic, rupture can cause life-threatening bleeding in the brain, known as subarachnoid hemorrhage (SAH), which carries a high risk of death and disability12. British actress Emilia Clarke survived two ruptured brain aneurysms, a recovery that is considered extraordinary given the extent of brain damage she sustained34. Her story highlights both the severity of this condition and the advances in medical care that can enable remarkable recoveries.
Understanding Brain Aneurysms
A brain aneurysm is a bulge or ballooning in a weakened area of a blood vessel wall in the brain2. These aneurysms often form at branching points of arteries, where the vessel walls are naturally weaker2. The most common type is the saccular or "berry" aneurysm, which looks like a small sac hanging from an artery2. Another type, fusiform aneurysms, cause bulging on all sides of the artery2.
When an aneurysm ruptures, it causes bleeding into the subarachnoid space—the area between the arachnoid membrane and pia mater surrounding the brain12. This bleeding is called a subarachnoid hemorrhage (SAH) and is a serious form of hemorrhagic stroke12. The blood irritates brain tissues, increases pressure inside the skull, and can disrupt blood flow, leading to brain cell death12.
Risk factors for developing brain aneurysms and for rupture include:
- Hypertension (high blood pressure)12
- Cigarette smoking12
- Family history of aneurysms12
- Female sex, with women more likely than men to develop aneurysms and experience rupture12
- Age between 30 and 60 years, with rupture risk higher in this group12
- Heavy alcohol use and illicit drug use, such as cocaine2
- Genetic conditions affecting connective tissue, such as Ehlers-Danlos syndrome2
- Polycystic kidney disease and other inherited disorders2
Brain aneurysms are relatively common, with an estimated 0.8% to 10% of the general population harboring them1. However, most aneurysms remain unruptured and asymptomatic2. Rupture is unpredictable but can cause sudden, severe neurological emergencies1.
Emilia Clarke’s first aneurysm rupture occurred unusually early, in her mid-20s, which is rare since rupture typically affects people aged 40 to 603. Young patients with ruptured aneurysms often have a familial predisposition, although Clarke has not publicly disclosed a family history13.
Brain Aneurysm Symptoms and Signs
Brain aneurysms often remain silent until they rupture. When rupture occurs, symptoms are sudden and dramatic due to bleeding into the brain’s subarachnoid space12. The hallmark symptom is a sudden, severe headache often described as "the worst headache of my life"12. Patients may describe the pain as if they were hit by a bat on the head1.
Other common symptoms of a ruptured brain aneurysm include:
- Nausea and vomiting12
- Stiff neck due to meningeal irritation12
- Sensitivity to light (photophobia)12
- Blurred or double vision2
- Drooping eyelid on the affected side2
- Seizures12
- Loss of consciousness or confusion12
Some patients experience warning leaks or "sentinel headaches" days or weeks before a major rupture, which may present as sudden, severe headaches lasting several days2. Unruptured aneurysms usually cause no symptoms but can sometimes press on nearby nerves or brain tissue, causing pain above or behind the eye, vision changes, or numbness on one side of the face2.
In Emilia Clarke’s case, she experienced a sudden, constricting headache and severe nausea while exercising, which quickly worsened3. She described the pain as elastic bands squeezing her brain and was violently ill, classic signs of SAH3. Immediate medical attention is critical because about 25% of patients with ruptured aneurysms die within 24 hours, and another 25% die within six months12.
“When you have a weakening of the blood vessel wall, slowly that weakening turns into a little balloon. And that little balloon is called an aneurysm.3”
The Brain Aneurysm Recovery Process
Recovery from a ruptured brain aneurysm is complex and varies widely among patients15. The initial 24 hours after rupture are critical; about 74% of patients survive this period, but many face life-threatening complications in the following months156. Emilia Clarke’s survival and recovery are considered remarkable given the severity of her condition and the amount of brain tissue lost4.
Once diagnosed, urgent treatment aims to stop bleeding and prevent re-rupture. Two main surgical treatments are used:
Surgical Clipping: A neurosurgeon performs a craniotomy (opening the skull) to place a metal clip at the base of the aneurysm, cutting off blood flow to it126. This method has a lower recurrence rate but involves open brain surgery6.
Endovascular Coiling: A less invasive procedure where a catheter is threaded through a blood vessel (usually in the groin) to the aneurysm, and tiny platinum coils are inserted to block blood flow126. This method has quicker recovery times but a higher chance of aneurysm recurrence6.
Emilia Clarke’s first surgery was an endovascular coiling procedure lasting three hours, performed without opening her skull3. Her second aneurysm required open brain surgery with parts of her skull replaced by titanium plates3. Both surgeries were lifesaving but involved significant pain and prolonged hospital stays3.
Several complications can arise after a ruptured aneurysm, affecting recovery:
- Vasospasm: Narrowing of blood vessels caused by irritation from blood in the brain, which can lead to ischemic stroke156.
- Hydrocephalus: Buildup of cerebrospinal fluid due to blockage by blood, increasing pressure on the brain16.
- Rebleeding: Risk of the aneurysm bleeding again, which can be fatal15.
- Electrolyte Imbalance: Changes in sodium levels that can harm brain cells16.
- Neurological Deficits: Including aphasia (language impairment), weakness, and cognitive difficulties3.
| Treatment Type | Description | Advantages | Disadvantages | Recovery Time |
|---|---|---|---|---|
| Surgical Clipping | Open skull surgery to place a metal clip | Lower recurrence and rebleeding rates16 | Invasive, longer recovery16 | Several weeks to months2 |
| Endovascular Coiling | Catheter-based insertion of platinum coils | Minimally invasive, quicker recovery16 | Higher chance of aneurysm recurrence16 | Shorter hospital stay2 |
“Even patients that are more severely affected, they still have a reasonable chance at functional independence and meaningful recovery.3”
Clarke experienced aphasia after her first surgery, unable to remember her own name, which caused panic and despair3. She also suffered from anxiety and panic attacks during her recovery3. Despite these challenges, advances in neurocritical care and rehabilitation have improved outcomes for many patients15.
Recovery can take weeks to months, with some patients regaining full function and others experiencing lasting deficits157. Rehabilitation often includes physical, occupational, and speech therapy to help patients regain mobility, communication, and daily living skills15.
Emilia Clarke returned to filming "Game of Thrones" within weeks of her first aneurysm but continued to face fatigue and pain3. After her second aneurysm and surgery, her recovery was slower and more difficult, involving a month-long hospital stay and ongoing medical monitoring3. Remarkably, she has since achieved full recovery and normal function, a rare outcome given the extent of her brain injury4.
- Brain aneurysms are balloon-like dilations in brain arteries that can rupture, causing life-threatening bleeding called subarachnoid hemorrhage12.
- Ruptured aneurysms cause sudden, severe headaches, nausea, stiff neck, vision changes, and other neurological symptoms12.
- Immediate medical treatment with surgical clipping or endovascular coiling is essential to stop bleeding and prevent rebleeding126.
- Recovery varies widely; complications such as vasospasm, hydrocephalus, and neurological deficits can occur156.
- Emilia Clarke’s survival and full recovery after two ruptured brain aneurysms are extraordinary, highlighting advances in neurocritical care and brain plasticity34.
