COVID-19 can raise blood pressure in some people during illness or in the weeks after, especially when fever, dehydration, inflammation, or heart strain is in play.
Blood pressure can feel like a mystery until it isn’t. One week your readings sit in your usual range, then you get sick with COVID-19 and the cuff starts flashing numbers that make you blink twice.
If you’re seeing higher readings after COVID-19, you’re not alone. The tricky part is sorting out what’s temporary from what needs a closer look. This guide walks through why blood pressure can rise, what patterns are common, how to measure it the right way at home, and when it’s time to get medical care fast.
This is general health information, not personal medical care. If you have symptoms that worry you, call a clinician.
Can Covid Increase Blood Pressure? What To Watch For
Yes, COVID-19 can be followed by higher blood pressure readings. For many people, it’s a short-lived bump tied to being sick. For others, the rise hangs on and needs follow-up.
Here are the patterns that show up a lot:
- A temporary spike during the acute illness. Fever, pain, poor sleep, anxiety, and some cold medicines can push numbers up.
- A jump from dehydration. Not drinking enough, sweating, vomiting, or diarrhea can throw off fluid balance and stress the body.
- Higher readings after you “feel fine.” Some people notice it in the month or two after COVID-19, even if the infection was mild.
- Wider swings than usual. One reading looks normal, the next looks high. Technique and timing can cause this, yet illness can too.
One high number on one day doesn’t diagnose anything. What matters is the trend across several days, taken with good technique, plus how you feel.
Why Blood Pressure Can Rise During COVID-19
Blood pressure is a moving target. It changes minute to minute based on fluid level, hormones, nervous system activity, and how hard your heart is working.
During COVID-19, several forces can push readings up:
Fever, pain, and poor sleep can nudge numbers up
When you’re sick, your body runs hot, your muscles ache, and sleep can get messy. That combo can raise heart rate and tighten blood vessels for stretches of time.
Dehydration and low appetite can throw off fluid balance
Even mild dehydration can make you feel weak and lightheaded. It can also change how your body regulates blood vessel tone and salt-water balance. If you’re not eating much, electrolytes can drift too.
Some over-the-counter meds can lift blood pressure
Decongestants in some cold products can raise blood pressure and heart rate in certain people. If you have high readings, check labels and ask a pharmacist what’s safest for you.
Inflammation can affect blood vessels
COVID-19 can trigger a strong inflammatory response. Inflammation can irritate the lining of blood vessels and affect how they relax and tighten. That may influence blood pressure during and after infection.
Heart and kidney strain can show up as higher readings
Most people recover without lasting organ injury. Still, COVID-19 can stress the heart and kidneys in some cases, and both organs play a big role in blood pressure control. If you had chest pain, shortness of breath that lingers, swelling, or a big drop in exercise tolerance, don’t brush it off.
After COVID-19: When Higher Readings Stick Around
Some people notice blood pressure staying higher after the acute infection ends. That can happen for a bunch of reasons that stack up: less activity during recovery, weight changes, disrupted sleep, lingering inflammation, or an underlying tendency toward hypertension that becomes easier to spot once you start checking.
Research has also flagged a link between COVID-19 infection and new high blood pressure in the months after illness, based on large health record analyses. You can read a plain-language summary from the American Heart Association here: COVID-19 may trigger new-onset high blood pressure.
Long COVID is real, and it can include symptoms that change how your body handles daily stress, activity, sleep, and recovery. The World Health Organization’s fact sheet lays out the timing and the wide range of symptoms people report: Post COVID-19 condition (long COVID).
So what should you do with that info? Treat it as a reason to track patterns, not a reason to panic. A steady run of high readings deserves a clinician’s attention, even if you feel okay.
| What You’re Seeing | What It Can Mean | What To Do Next |
|---|---|---|
| One high reading, next one normal | Technique, timing, stress, talking during the reading | Rest 5 minutes, retest twice, record all readings |
| Higher readings only during fever days | Acute illness effect (pain, fever, poor sleep) | Hydrate, rest, track through recovery week |
| High readings after decongestant use | Medication effect in some people | Stop the trigger product, ask pharmacist for safer options |
| Numbers trend higher for 2–4 weeks after COVID-19 | Recovery changes (less movement, sleep disruption, lingering inflammation) | Start a 7-day home log and book a check-in if the trend holds |
| New headaches with high readings | Could be a warning sign, or could be unrelated | Recheck after rest; seek care fast if severe or paired with neuro symptoms |
| High readings plus chest pain or shortness of breath | Possible heart or lung issue | Seek urgent care right away |
| Swelling in legs, sudden weight gain, or reduced urination | Fluid shifts, kidney strain, or heart strain | Contact a clinician the same day |
| Consistent home readings at or above 130/80 | Possible hypertension, depending on full context | Bring your log to a clinician for diagnosis and plan |
| Readings at or above 180/120 | Severely high blood pressure | Recheck after 5 minutes; seek urgent care if it stays high or symptoms show up |
What Counts As High Blood Pressure
Blood pressure categories can feel like alphabet soup, yet the basics are simple. Higher numbers raise the chance of heart disease and stroke over time. The CDC’s overview page is a solid starting point for definitions and risk: High Blood Pressure (CDC).
If you already have hypertension, illness can cause short spikes. If you never had it before, a run of higher readings after COVID-19 might be the first time you’ve caught a pattern that was quietly building.
How To Check Your Blood Pressure At Home
Home numbers can be more useful than a single office reading, as long as you measure correctly. Sloppy technique can add 10–20 points in a blink.
Use this routine for clean, repeatable readings:
- Pick a validated upper-arm cuff. Wrist cuffs can be finicky. Use the right cuff size for your arm.
- Skip caffeine, nicotine, and exercise for 30 minutes. These can bump readings.
- Use the bathroom first. A full bladder can raise readings.
- Sit quietly for 5 minutes. Feet flat, back supported, legs uncrossed.
- Arm at heart level. Rest it on a table, not in midair.
- No talking during the reading. Talking can lift numbers.
- Take two readings, one minute apart. Record both.
The NHLBI’s handout has a clear checklist you can follow and print: Self-Measured Blood Pressure Fact Sheet.
How To log readings so a clinician can use them
A useful log has context. Next to each reading, note:
- Time of day
- Any fever, cough, or pain that day
- Any decongestant, NSAID, or steroid use
- Sleep quality the night before
- Hydration (low, normal, high)
That kind of detail turns a pile of numbers into a story a clinician can act on.
When To Call A Clinician Or Seek Urgent Care
Most post-viral blood pressure bumps settle as you recover. Still, there are lines you shouldn’t cross alone.
Seek urgent care right away if you have symptoms with very high readings
If your reading is at or above 180/120 and you also have chest pain, shortness of breath, weakness on one side, trouble speaking, fainting, or new vision changes, get urgent care now.
Call a clinician soon if the trend stays high
If your home readings stay high for a week, or you keep seeing numbers at or above 130/80 across multiple days, set up a medical visit. Bring your log. Bring your cuff too, so the office can compare it with their equipment.
If you’re on blood pressure meds, don’t change doses on your own
During illness, appetite and hydration can swing, and that changes how meds land. A clinician can guide safe adjustments if they’re needed.
Medicines And Daily Habits That Can Help During Recovery
If COVID-19 bumped your numbers, the goal is calm, steady recovery. This is not the time for crash diets or punishing workouts. Small moves done consistently tend to win.
Medication notes worth knowing
- Decongestants: Some can raise blood pressure. Read labels and ask a pharmacist for alternatives.
- NSAIDs: Ibuprofen and similar meds can raise blood pressure in some people, especially with frequent use.
- Steroids: If prescribed for COVID-19 complications, steroids can affect blood pressure and blood sugar.
If you’re unsure what a product contains, check the active ingredients. Keep the package or a photo of the label so a clinician can review it fast.
Daily steps that tend to lower readings
- Hydrate steadily. Sip through the day, especially if you had fever or sweating.
- Keep salt swings in check. Big jumps in salty foods can raise readings for some people.
- Return to walking before harder exercise. A 10–20 minute walk, if you tolerate it, can help sleep and stress.
- Protect sleep. A consistent bedtime and a dark room can help your body settle.
- Limit alcohol during recovery. Alcohol can affect sleep and blood pressure.
If you already have hypertension, stick with the plan you and your clinician set up. If you don’t, treat this as a window to build habits that keep your readings in a healthier range long term.
| Situation | Home Checking Plan | When To Escalate |
|---|---|---|
| Acute COVID-19 with fever | Check once daily at the same time, plus one extra check if you feel unwell | Call a clinician if readings stay high for 3 days or symptoms worsen |
| Recovery week with fatigue | Morning and evening checks for 3–5 days | Book a visit if the trend stays high across the week |
| New high readings, no prior hypertension | Two readings in the morning and two in the evening for 7 days | Contact a clinician if averages stay at or above 130/80 |
| Known hypertension on medication | Follow your usual plan, add 3 extra days of checks after illness | Call if dizziness, fainting, or a sudden jump shows up |
| Very high reading (near 180/120) | Rest 5 minutes, retest twice, record all numbers | Seek urgent care if it stays that high or symptoms appear |
Questions To Ask At Your Next Appointment
If you’re heading in for a follow-up, a short list can keep the visit focused. Try these:
- “Do my home readings match the office readings with the same cuff?”
- “Based on my log, do I meet criteria for hypertension?”
- “Could any meds I took during COVID-19 have raised my numbers?”
- “Should we check kidney function, electrolytes, or heart markers?”
- “What home reading range should trigger a same-day call?”
Bring your cuff, your log, and a list of meds and supplements you used during your illness. That makes the visit quicker and cleaner.
Takeaways For This Week
COVID-19 can push blood pressure up during illness and, for some people, after recovery. Most short spikes settle as you rehydrate, sleep better, and move more.
If the trend sticks around, treat it like a real signal. Measure correctly, log readings for a week, and take the log to a clinician. Early action beats guessing.
References & Sources
- Centers for Disease Control and Prevention (CDC).“High Blood Pressure.”Overview of hypertension basics, risks, and general public guidance.
- National Heart, Lung, and Blood Institute (NHLBI), NIH.“Self-Measured Blood Pressure Fact Sheet.”Step-by-step tips for accurate home blood pressure measurement.
- World Health Organization (WHO).“Post COVID-19 condition (long COVID).”Defines timing and symptom range for post-COVID-19 condition and outlines general guidance.
- American Heart Association (AHA) Newsroom.“COVID-19 may trigger new-onset high blood pressure.”Summary of research linking COVID-19 infection with higher odds of developing hypertension.