Can panic attacks cause strokes? Had 24 holter, echocardiogram, stress test, and renal ultrasound all normal. BP can get up to 180/100 sometimes.

Strokes. High blood pressure can cause ischemic or hemorrhagic strokes. If you experience frequent panic attacks, consult a psychiatrist for evaluation,advice and treatment. Your blood pressure may need medication to keep it from spiking. Your physician or cardiologist can advise you best about monitoring and treating hypertension. Stress management therapy and lifestyle changes may also help that.
Possible, but... It would be most reasonable for you to see your doctor timely. How to get a better care? Follow instructions in Known to us, panic attacks alone may increase blood pressure but, at age 27, the odd to rupture blood vessel leading to stroke is much lower than that in the elderly. Nonetheless, you should be timely followed as advised.