Urgent care vs. the ER: How to know where to go

When an illness or injury happens suddenly, it’s not always clear whether you should go to urgent care or the emergency room. While the ER is designed for severe or life-threatening conditions, urgent care can often treat many non-emergency illnesses and injuries that need same-day attention.

Here, we'll break down when symptoms may require a trip to the emergency room and when urgent care may be a better fit.

When to go to the ER

Head to a hospital emergency room if you’re experiencing a life-threatening emergency or serious illness or injury:

• Life-threatening emergencies: Dial 911 or emergency services near you
• Severe illnesses and injuries when you need care right away: Call 911 or go directly to the ER

Sometimes, it’s easy to tell when you need to go to the emergency room, such as if you or a family member are having shortness of breath or chest pain, or are seriously injured. But other times, it may not be so obvious. A severe headache may seem like something to sleep through, but if it’s accompanied by vision changes, dizziness or numbness, it could be a sign of a serious medical emergency and should be evaluated immediately. 

If you're unsure whether you should go to the ER, consider calling your doctor’s office or a nearby urgent care center for guidance. But if symptoms are severe, worsening quickly or if you can't reach a healthcare professional, it's best to not wait to seek emergency care. 

What is considered a medical emergency?

Here are some types of medical situations that warrant a trip to the ER.

Chest pain

If you’re experiencing chest pain — especially in combination with jaw or arm pain, lightheadedness, nausea, vomiting or difficulty breathing — seek emergency medical care right away. These symptoms could be signs of a heart attack or another serious medical condition. 

Deep or large cuts involving muscle or bone

Deep cuts or injuries that expose muscle, bone or other tissue should be evaluated in the emergency room. You should also seek care if bleeding is significant or doesn't stop after applying firm pressure.

Signs of stroke

If you or a loved one is experiencing warning signs of a stroke — every second counts. It’s important to remember the signs of a stroke with the acronym “B.E. F.A.S.T.”

• Balance changes or loss of balance
• Eyes and vision changes
• Face drooping or numbness 
• Arm weakness
• Speech that is slurred 
• Time, get help immediately

If you’re having these symptoms, call 911 and seek emergency care right away.

Other examples of a medical emergency include:

• Burns that are large or involve the face, hands or feet
• Difficulty breathing or sudden shortness of breath 
• High fever — 105 degrees Fahrenheit (40.55 Celsius) or higher in children older than 3 months, or 100.4 F (38 C) or higher in children under 3 months
• Poisoning
• Severe allergic reactions
• Severe pain or weakness

How are patients prioritized in the ER?

Emergency rooms use a process called triage to determine which patients need immediate medical attention. 

For example, someone with life-threatening symptoms, such as signs of a heart attack or stroke, will typically be treated before someone with a sprained ankle or sinus infection — regardless of who arrived first. 

If you need care for a non-threatening illness or injury, you may experience a longer wait time in the emergency room. But in many cases, urgent care can provide a faster option for the care you need.

ER wait times can be long and uncomfortable when you or a loved one are in need of care. That’s why knowing the best place to get checked out is important. 

When to go to urgent care

Whether it's called urgent care, immediate care, express care or walk-in care, these types of care clinics can sound like they’re for an emergency. But urgent care centers are for minor illnesses and injuries. 

Where it can get tricky is that, depending on where you live, the services may vary. For example, your nearest urgent care might be able to stitch minor cuts, and perform blood work, lab tests and X-rays while a facility a few streets over may not. So if time allows, it's good to do a little research to make sure the urgent care you plan to visit offers the services you think you may need.

 What does urgent care treat?

Visit an urgent care or walk-in clinic when you need care quickly but it’s not an emergency. That means for things like: 

• Bites
• Ear or eye infections
• Food poisoning, nausea, vomiting or diarrhea
• Urinary tract infections
• Mild asthma
• Minor cuts, burns or sprains 
• Minor back pain
• Skin rashes or insect bites that aren't spreading 

Other reasons to visit your nearest immediate or urgent care center include:

Cold or flu-like symptoms

Visit walk-in care for cold or flu-like symptoms, such as fever, cough, sore throat or body aches, when you need more immediate care and your symptoms aren’t life-threatening.

 Mild skin infections or abscesses

Urgent care is your best option for a mild skin infection or abscess if you have redness, swelling, pain or drainage that needs treatment but that’s not spreading rapidly or causing severe symptoms.

If you develop a high fever, severe pain, rapidly spreading redness or other signs of a serious infection, seek emergency medical care. 

Moderate allergic reactions

If you have hives, itching or mild swelling, urgent care may be able to help. But if your symptoms include difficulty breathing, swelling of the face or throat or other signs of a severe allergic reaction, call 911 or go to the nearest ER right away. .

When to wait to see your primary care provider?

For routine care and ongoing health needs, your primary care provider — which you may hear referred to as your "PCP" — is often the best place to start.

Your PCP is the main healthcare provider who’ll manage most of your health concerns and who you’ll build a relationship with over time. They can provide things like:

• Preventive care
• Annual wellness exams
• Vaccinations
• Routine screenings 
• Care for chronic conditions
• Mental health support

They can also evaluate illnesses and symptoms that don't require immediate attention, such as cold and flu symptoms, headaches, fatigue, digestive concerns or ongoing pain. 

In general, if your symptoms are mild, have been present for some time or can safely wait a few days for an appointment, your primary care provider may be the most appropriate choice.

Whether you need urgent care for a minor illness or injury or emergency care for a serious medical concern, choosing the right level of care can help you get treatment faster. Find an Ascension express or urgent care location or emergency room near you. 

If you are experiencing a life-threatening emergency, call 911 and go directly to the ER. 

Medically reviewed on 6/7/26 by: Dr. Vasundhara Voleti, ER physician at Ascension St. Vincent Jennings

Next steps and helpful resources:

Find an express or urgent care 

Find emergency care

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