Hi im 30 year old male. today while driving i started to feel irritable, anxious and then i had pens and needle feeling in hands and heart beating fasting for no reason. and felt dizzy when walking. started after taking hydrochlorothiazide for bp?

Your symptoms are less likely due to hydrochlorothiazide (Hctz) but they should not be neglected. For sensitive people with an average dose of Hctz, low serum potassium (hypokalemia) may occur and symptoms may vary. Postural hypotension (low blood pressure) on standing is rare but still possible. I wonder how long have you taken Hctz but I think you should be checked when having sx with a new med

Since you just started your hydrochlorothiazide, this event needs to be reported to your doctor. But you may instead have suffered a panic reaction with hyperventilation. Regardless of the precise nature of the spell, do discuss it with your physician.