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Senseless at the time of blood test
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Nervous System Disorders
Question #22767
2 hours ago
12

Senseless at the time of blood test - #22767

Deep

This morning I had my blood drawn for a blood test on an empty stomach, and after that, I started feeling dizzy, and my head spun twice. I didn't fall down, but I was spinning intensely. I go running in the field every morning. I am generally afraid of injections and the sight of my own blood. What is the exact reason for my dizziness?"

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Doctors’ responses

Dr. Arsha K Isac
I am a general dentist with 3+ years of working in real-world setups, and lemme say—every single patient teaches me something diff. It’s not just teeth honestly, it’s people… and how they feel walking into the chair. I try really hard to not make it just a “procedure thing.” I explain stuff in plain words—no confusing dental jargon, just straight talk—coz I feel like when ppl *get* what's going on, they feel safer n that makes all the difference. Worked with all ages—like, little kids who need that gentle nudge about brushing, to older folks who come in with long histories and sometimes just need someone to really sit n listen. It’s weirdly rewarding to see someone walk out lighter, not just 'coz their toothache's gone but coz they felt seen during the whole thing. A lot of ppl come in scared or just unsure, and I honestly take that seriously. I keep the vibe calm. Try to read their mood, don’t rush. I always tell myself—every smile’s got a story, even the broken ones. My thing is: comfort first, then precision. I want the outcome to last, not just look good for a week. Not tryna claim perfection or magic solutions—just consistent, clear, hands-on care where patients feel heard. I think dentistry should *fit* the person, not push them into a box. That's kinda been my philosophy from day one. And yeah, maybe sometimes I overexplain or spend a bit too long checking alignment again but hey, if it means someone eats pain-free or finally smiles wide in pics again? Worth it. Every time.
2 hours ago
5

Hello

What you experienced fits very well with a vasovagal reaction.

When you see blood or feel anxiety from injections, your nervous system can suddenly overreact, causing your heart rate and blood pressure to drop.

Because you were fasting, likely dehydrated, and had already run in the morning, your blood sugar and circulating volume were lower than usual, which made the reaction stronger.

This led to dizziness and a spinning sensation without loss of consciousness.

It is common, harmless, and self-limited. Lying down, hydrating, and eating usually stop the symptoms, and

it does not indicate a brain or heart problem.

I trust this helps Thank you

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