Stroke treatment depends on the type of stroke, how much time has passed since symptoms began, and where the blockage or bleeding is located. The two main types, ischemic (caused by a clot) and hemorrhagic (caused by bleeding), require very different approaches. In all cases, faster treatment leads to better outcomes, and the first few hours matter enormously.
Diagnosing the Stroke Type First
Before any treatment begins, doctors need to determine whether the stroke is caused by a blood clot blocking an artery or by bleeding in the brain. This distinction is critical because the treatments are essentially opposite: dissolving a clot in one case, stopping bleeding in the other.
A non-contrast CT scan is almost always the first step. It takes minutes and can quickly rule out or confirm bleeding. CT is fast and reliable for detecting hemorrhage, but MRI is more sensitive for identifying early signs of ischemia and for ruling out conditions that mimic stroke. If the CT shows no bleeding, the working diagnosis is ischemic stroke, and clot-dissolving treatment can begin. Doctors also image the blood vessels using CT or MR angiography to locate the blockage and decide whether a procedure to physically remove the clot is warranted.
Clot-Dissolving Medication for Ischemic Stroke
About 87% of strokes are ischemic, and the primary emergency treatment is intravenous thrombolysis: a clot-dissolving drug given through an IV. The medication works by activating a natural enzyme in the blood that breaks down the fibrin holding a clot together, restoring blood flow to the affected area of the brain.
For decades, the standard drug was alteplase, given as an infusion over about an hour. A newer engineered version called tenecteplase is now endorsed as an equal option in the latest American Heart Association/American Stroke Association guidelines, published in 2026. In a large randomized trial of nearly 1,500 patients, 72.7% of those receiving tenecteplase achieved excellent functional outcomes compared with 70.3% on alteplase, with identical rates of the most feared complication, brain bleeding, at 1.2% in each group. Tenecteplase has a practical advantage: it’s given as a single IV push rather than a lengthy infusion, making it faster and simpler to administer.
The treatment window is 4.5 hours from symptom onset. Every minute counts within that window. Mobile stroke units, essentially ambulances equipped with CT scanners and the ability to start treatment on the road, are now recommended where available because they shorten the time from symptom onset to treatment and improve outcomes.
Mechanical Thrombectomy
For strokes caused by a large clot in a major brain artery, doctors can physically retrieve the clot using a catheter threaded from the groin up to the blocked vessel. This procedure, called mechanical thrombectomy, is one of the most significant advances in stroke care in recent years.
The treatment window for thrombectomy extends well beyond what’s possible with clot-dissolving drugs. Landmark trials (DAWN and DEFUSE-3) demonstrated that some patients benefit from the procedure up to 24 hours after they were last known to be well. Eligibility in that extended window depends on advanced brain imaging showing that a meaningful amount of brain tissue is still salvageable, meaning it’s starved of blood but not yet permanently damaged. Not everyone qualifies. The imaging criteria are selective, and patients with very large areas of already-dead tissue, mild symptoms, or blockages in smaller branch arteries may fall outside the current guidelines.
When both treatments are appropriate, they’re used together: clot-dissolving medication is started first, and thrombectomy follows.
Treating Hemorrhagic Stroke
When a stroke is caused by bleeding, the goals shift to stopping the bleed, reducing pressure inside the skull, and preventing further damage. There is no clot to dissolve, so thrombolytic drugs would be harmful.
Blood pressure is lowered aggressively using IV medications to reduce the force pushing blood out of the ruptured vessel. If pressure builds inside the skull from the accumulating blood, doctors elevate the head of the bed and use medications that draw fluid out of brain tissue to create more room. In severe cases, surgery may be needed to drain the blood.
Ruptured Brain Aneurysms
If the bleeding came from a ruptured aneurysm (a balloon-like weak spot on an artery wall), the aneurysm itself needs to be sealed to prevent another bleed. Two main approaches exist.
Surgical clipping involves opening the skull and placing a tiny metal clip at the base of the aneurysm to cut off blood flow to it. Endovascular coiling is less invasive: a catheter is threaded through the blood vessels, and tiny platinum coils are packed into the aneurysm to promote clotting inside it.
Each approach has tradeoffs. Clipping achieves a higher rate of complete closure, around 91% for large aneurysms compared to just 36% with coiling. But coiling is associated with lower complication rates, shorter hospital stays (about 2.7 fewer days on average), and better neurological outcomes in the short term. When aneurysms are treated with coiling, the incomplete closure rate is higher, which means some patients need retreatment over time. The choice between them depends on the aneurysm’s size, shape, and location, along with the patient’s overall health.
Carotid Artery Procedures
If a stroke was caused by a severely narrowed carotid artery (the major artery in the neck supplying the brain), treating that narrowing helps prevent a second stroke. This typically comes up when the artery is at least 60% blocked.
Carotid endarterectomy is a surgical procedure where a surgeon opens the artery and removes the built-up plaque. Carotid stenting is a less invasive alternative where a mesh tube is placed inside the artery to hold it open. In a large trial comparing the two in patients with significant symptomatic narrowing, endarterectomy resulted in lower rates of death and stroke at both one month and six months. Endarterectomy remains the standard treatment for most patients with severe symptomatic carotid disease, though stenting may be preferred in patients whose other medical conditions make surgery risky.
Preventing a Second Stroke
About 1 in 4 strokes are recurrent, so prevention after a first stroke is a major focus of treatment. This involves a combination of daily medications and lifestyle changes that continues indefinitely.
For patients without atrial fibrillation, antiplatelet drugs are the foundation. Low-dose aspirin (75 to 150 mg daily) or clopidogrel (75 mg daily) are the standard options. In the first three weeks after a minor ischemic stroke, doctors often prescribe both aspirin and clopidogrel together, then switch to a single drug after that initial period. The dual approach provides extra protection in the highest-risk window right after a stroke, but continuing both long-term increases bleeding risk without added benefit.
Patients with atrial fibrillation, a heart rhythm disorder that causes clots to form in the heart, are placed on anticoagulant therapy instead. Cholesterol-lowering medications and blood pressure drugs round out the medication regimen for most stroke survivors.
Rehabilitation After Stroke
Rehabilitation typically starts within 24 to 48 hours of the stroke, while the patient is still in the hospital. The specific therapies depend on what abilities were affected.
Physical therapy focuses on relearning movement: walking, balance, and coordination. Progress varies widely. Some people regain near-normal mobility within weeks, while others work on these skills for months. Occupational therapy targets the practical skills of daily life, including dressing, bathing, cooking, and eventually returning to driving. These therapists also address cognitive challenges that affect the ability to plan, organize, and stay safe at home. Speech and language therapy helps with both communication and swallowing difficulties, two of the most common and frustrating effects of stroke. Speech therapists also work on memory and thinking problems that can linger after brain injury.
The most rapid recovery generally happens in the first three months, though meaningful improvement can continue well beyond that. Rehabilitation often transitions from an inpatient facility to outpatient sessions and eventually to exercises done independently at home, with the intensity gradually decreasing as function returns.