Stroke: Symptoms, Causes & Treatment

A stroke is a medical emergency that occurs when blood flow to a part of the brain is blocked, depriving brain cells of oxygen and nutrients. There are two main types: ischemic stroke (87% of cases) caused by a blood clot or plaque blocking a blood vessel, and hemorrhagic stroke (13% of cases) caused by a ruptured blood vessel bleeding into the brain.

A stroke is critical because brain cells begin dying within minutes of losing blood supply. Treatment must start as quickly as possible, as every minute matters to save brain tissue. In Jordan and the Middle East, stroke is the second leading cause of death after heart disease, affecting thousands annually. Survivors often face permanent complications such as paralysis, speech difficulties, and memory loss.

Prevention through managing risk factors such as high blood pressure, diabetes, and smoking is crucial in reducing stroke risk. Early recognition of stroke symptoms using the FAST test (Face, Arms, Speech, Time) can significantly improve outcomes and reduce disability.

Stroke symptoms appear suddenly and can vary depending on the location and size of the affected brain area. Recognizing symptoms immediately is crucial as time is critical. While men and women typically experience similar symptoms, studies suggest women may report atypical symptoms like dizziness and confusion more frequently.

• Sudden weakness or paralysis: On the face, arm, or leg, especially on one side of the body.
• Numbness in face or limbs: Particularly on one side of the body.
• Speech difficulty or slurred speech: Speech may become unclear, slurred, or slow.
• Difficulty understanding speech: Trouble comprehending what others are saying.
• Sudden vision loss or blurred vision: Vision may become unclear or disappear in one eye.
• Severe dizziness and vertigo: Loss of balance or spinning sensation.
• Sudden severe headache: Often accompanied by neck stiffness or vomiting, especially in hemorrhagic stroke.
• Loss of consciousness or altered consciousness: The person may become unresponsive.
• Balance and coordination problems: Difficulty walking or loss of balance.
• Confusion and disorientation: Unclear thinking or confusion about time and place.
• Difficulty swallowing: Trouble swallowing saliva or food.
• Facial drooping: Mouth may droop or one side of the face sags.

• Atherosclerosis (plaque buildup in arteries): Accumulation of cholesterol and fat on artery walls narrows blood vessels and increases the risk of clot formation.
• Atrial fibrillation (irregular heartbeat): This heart rhythm disorder causes blood pooling, increasing clot formation that can travel to the brain.
• High blood pressure (hypertension): Elevated pressure weakens artery walls, increasing risk of rupture or narrowing.
• Diabetes (Type 1 and Type 2): Diabetes damages blood vessel walls, increases thickness, and accelerates hardening.
• Heart disease: Conditions like congenital heart defects and myocarditis promote clot formation.
• Severe dehydration: Fluid loss thickens blood and increases clot risk.
• Trauma and injuries: Head or neck trauma can damage blood vessels and cause bleeding.
• Certain medications and drugs: Birth control pills, stimulants, and cocaine increase blood clot risk.

• Advanced age: People over 55 are at higher risk.
• High blood pressure: The most important modifiable risk factor; doubles or triples risk.
• Smoking: Thickens blood, hardens vessels, increases risk by 50%.
• Obesity and overweight: Associated with high blood pressure, diabetes, and high cholesterol.
• Physical inactivity: Increases weight, blood pressure, and cholesterol.
• Excessive alcohol consumption: Raises blood pressure and causes irregular heartbeat.
• Family history: Genetic predisposition if relatives had stroke.
• Sex and hormones: Men at higher risk before 65; older women at higher risk, especially with hormone use.
• High cholesterol: Elevated LDL (bad cholesterol) accelerates vessel hardening.
• Psychological stress and depression: Increase blood pressure and heart rhythm problems.

Diagnosing a stroke requires rapid clinical assessment and immediate brain imaging. Time is critical because effective medications (like thrombolytics) must be given within hours of symptom onset. The doctor will assess symptoms, vital signs, and order imaging and lab tests to confirm the diagnosis.

• Clinical examination (NIHSS test): Evaluates consciousness, speech, movement, sensation, and vision. Scores range from 0-42; higher scores indicate more severe stroke.
• CT scan (non-contrast): The first and fastest test to rule out brain bleeding. Performed within minutes.
• MRI (Magnetic Resonance Imaging): More accurate than CT for detecting ischemic strokes, especially in early hours.
• Angiography (CT or MR angiography): Shows blood vessels and precise clot location for treatment planning.
• Electrocardiogram (ECG): Checks for atrial fibrillation or other heart problems causing clots.
• Blood tests: Include blood sugar (normal: 70-100 mg/dL), cholesterol, and clotting factors to assess overall health status.
• Ultrasound of blood vessels: Examines vessels in the neck and brain for blockages.
• Additional tests: May include vision assessment and advanced neurological testing as needed.

Medications

• Thrombolytics (tPA): Gold standard for ischemic stroke if given within 3-4.5 hours of symptom onset. Injected intravenously to dissolve the clot. Very effective if given early but carries bleeding risk.
• Anticoagulants (Aspirin, Warfarin): Prevent new clot formation, especially for patients unable to receive tPA.
• Blood pressure medications: Control elevated blood pressure to prevent complications.
• Statins (Cholesterol-lowering drugs): Long-term use reduces risk of recurrent stroke.
• Diabetes medications: For diabetic patients to control blood sugar levels.
• Antidepressants and anti-anxiety drugs: Treat post-stroke depression and anxiety.

Procedures and Surgical Interventions

• Mechanical thrombectomy: Advanced procedure using a thin catheter to remove clots directly from brain vessels. Highly effective within 24 hours, especially for large vessel occlusions.
• Ventriculostomy (in hemorrhagic stroke): Drains accumulated cerebrospinal fluid around the brain.
• Hematoma evacuation surgery: Removes accumulated blood in severe bleeding cases.
• Vascular repair or clipping: Repairs ruptured vessels or vascular malformations.

Lifestyle Changes and Rehabilitation

• Physical rehabilitation: Comprehensive programs help restore movement, speech, and daily functions. Begins after stabilization.
• Speech therapy: Addresses speech and swallowing difficulties.
• Psychological support: Treats post-stroke depression and anxiety.
• Dietary modifications: Low-salt, low-saturated fat diet rich in fruits and vegetables.
• Smoking cessation: Essential to prevent recurrent stroke.
• Regular exercise: Gradual light activity like walking aids recovery after stabilization.
• Stress management: Relaxation techniques and mindfulness reduce psychological stress.

• Permanent paralysis and weakness: Patient may lose ability to move parts of the body permanently, especially one side. This most common complication severely impacts daily life.
• Speech and language problems (Aphasia): Patient may struggle to speak clearly or understand others. Requires long-term speech therapy.
• Memory and concentration problems (Cognitive impairment): Difficulty remembering, concentrating, and decision-making. Affects work and social life.
• Depression and anxiety: Many stroke survivors experience post-stroke depression, slowing recovery.
• Swallowing problems (Dysphagia): Difficulty swallowing increases choking and pneumonia risk. May require feeding tube.
• Recurrent stroke: Some patients face repeated strokes within years if risk factors aren't controlled.
• Other neurological problems (seizures, vision loss): Some experience seizures or partial/complete vision loss.
• Chronic pain (Post-stroke pain syndrome): Some patients suffer chronic body pain, especially in affected limbs.

• Control blood pressure: Keep BP below 120/80 mmHg. Monitor regularly and take medications as prescribed.
• Manage diabetes: Monitor blood sugar; keep fasting glucose 100-126 mg/dL (normal: <100). Follow diet and medications.
• Lower cholesterol: Take statin medications. Keep total cholesterol <200 mg/dL and LDL <100 mg/dL.
• Quit smoking: Smoking increases stroke risk by 50%. Quitting immediately significantly reduces risk.
• Exercise regularly: 150 minutes of moderate aerobic activity weekly (brisk walking) reduces risk by 20-30%.
• Eat healthy diet: Mediterranean diet rich in fruits, vegetables, fish; low in salt and saturated fat.
• Maintain healthy weight: Reduce weight if obese. BMI should be 18.5-24.9.
• Limit alcohol: No alcohol or minimal amounts (<1 drink/day for women, 2 for men).
• Manage psychological stress: Use relaxation techniques, mindfulness, and breathing exercises.
• Regular medical checkups: Monitor BP, blood sugar, and cholesterol regularly, especially for those over 40 or with risk factors.