24/7 Allergic Reaction & Anaphylaxis Care in Round Rock, TX 78681

Get emergency physician-led treatment in Round Rock for severe allergic reactions, anaphylaxis, hives, facial swelling and breathing symptoms, with monitoring and transfer when needed.

Allergic Reaction Emergency Care Round Rock

Allergic Symptoms Can Progress Quickly

An allergic reaction may begin with itching, rash or mild swelling and then worsen. Anaphylaxis is a severe, potentially life-threatening reaction that can affect breathing, circulation, skin and the digestive system.

NorthStar provides 24-hour emergency evaluation for adults and children. The care team can assess the airway, breathing and circulation; treat serious symptoms; monitor the response; and arrange transfer when intensive or specialty care is required.

Severe symptoms: Call 911 for trouble breathing, throat or tongue swelling, fainting, confusion or other signs of anaphylaxis. Use prescribed epinephrine immediately as directed, then call 911.

Hives, Itching or Flushing

Facial, Lip or Tongue Swelling

Wheezing or Breathing Difficulty

Throat Tightness

Vomiting or Abdominal Cramps

Dizziness or Faintness

Acute Allergic Reactions

Acute Allergic Reactions Symptoms, Hives and Common Triggers

Reactions range from localized itching or rash to life-threatening anaphylaxis. A previous mild reaction does not guarantee that a future reaction will remain mild.

TRIG

Common Allergy Triggers

Food, medication, stings, latex and environmental or cosmetic exposures.

Potential triggers

Peanuts, tree nuts, shellfish, milk or eggs
Prescription and over-the-counter medication
Antibiotics and injected medicines
Insect bites or stings
Latex, cosmetics, adhesives or personal-care products
Acrylic nail or eyelash-extension products
Animals, pollen, mold or environmental exposure
An unknown trigger

HIVES

Hives and Skin Reactions

Raised, itchy welts may change shape, move or come and go.

When hives need emergency help

Call 911 when hives occur with throat tightness, facial or tongue swelling, breathing difficulty, fainting or severe vomiting. Hives without emergency symptoms may still need evaluation when widespread, uncomfortable, persistent or related to a new medication.

Hives may follow allergy, infection, medication, heat, pressure or another trigger.

AIR

Asthma Attack vs. Allergic Reaction

Both conditions can cause wheezing, coughing, chest tightness and breathlessness.

Signs that suggest anaphylaxis

Anaphylaxis is more likely when breathing symptoms occur with hives, facial or tongue swelling, throat tightness, fainting, vomiting or rapid onset after a likely trigger.

A person can have asthma and anaphylaxis together. Use prescribed epinephrine and call 911 when anaphylaxis is possible. A rescue inhaler does not treat throat swelling, low blood pressure or the full-body effects of anaphylaxis.

Digestive Allergy Symptoms

Nausea, vomiting, diarrhea or cramping may be part of a serious reaction.

Digestive symptoms and anaphylaxis

Repeated vomiting, severe cramping or diarrhea with hives, swelling, breathing difficulty, faintness or rapid onset after a known exposure can indicate anaphylaxis. Use prescribed epinephrine as directed and call 911.

Special Situations

Children, Cosmetic Products and Unknown Substances

Symptoms and triggers vary by age and exposure. Emergency warning signs always take priority over identifying the exact cause.

BABY

Babies and Children With a Rash

Rash may result from allergy, infection, heat, eczema, irritation or another cause.

Pediatric warning signs

Trouble or noisy breathing
Swelling of lips, tongue, face or throat
Blue, gray or unusually pale coloring
Repeated vomiting with rash
Unusual sleepiness, limpness or reduced response
Rapidly spreading purple or bruise-like rash
Any fever in a baby younger than 12 weeks

Call 911 for breathing difficulty, swelling or reduced responsiveness. Do not give an infant medication unless appropriate for age and directed by a qualified clinician.

BEAUTY

Eyelash and Acrylic-Nail Reactions

Adhesives, acrylates and solvents can irritate skin or cause allergy.

Safe next steps

Symptoms may include eyelid swelling, redness, itching, blistering or irritation around the nails. Remove exposure when it can be done safely, but do not forcefully pull products away or apply harsh chemicals to irritated skin.

Seek prompt care for severe swelling, eye pain, vision changes, facial swelling, spreading rash or breathing symptoms. Eye chemical exposure may require immediate irrigation and emergency evaluation.

DRUG

Reactions After an Unknown Drug

Symptoms may reflect allergy, toxicity, contamination, heart problems, stroke, panic or overdose.

When to call 911

Call 911 for chest pain, severe agitation, seizure, high temperature, fainting, breathing difficulty or altered awareness after cocaine or another unknown substance.

Do not assume hives or breathing symptoms are only an allergy. Tell emergency clinicians what was taken, when and by what route so treatment can be safer.

MED

Medication Reactions

Evaluation after a suspected reaction to prescription, over-the-counter or injected medication.

Information to share

Bring the medication name, label or packaging if it is readily available, but do not delay emergency help to find it. Tell the team when the medication was taken, the dose, prior reactions and all other current medicines.

Call 911 for airway swelling, breathing difficulty, fainting, confusion or rapidly worsening symptoms.

Emergency Evaluation & Treatment

Care for Severe Allergic Reactions

The team assesses airway, breathing, circulation, skin, mental status and possible triggers. Treatment is based on severity and should not be delayed for allergy testing.

Epinephrine & Airway Care

Circulation & Medication

Observation & Transfer

Symptoms can return after initial improvement. A physician determines monitoring time and discharge planning based on severity, response and risk.

Persistent or severe reactions may require transfer for intensive care or advanced airway support.

Testing and Follow-Up

Diagnostic Support and Allergy Follow-Up

Anaphylaxis is diagnosed primarily from symptoms and examination. Emergency treatment comes before identifying the exact allergen.

On-Site Diagnostic Support

When another diagnosis, complication or exposure is possible, evaluation may include:

Oxygen measurement and vital-sign monitoring
EKG and cardiac markers for chest symptoms or drug exposure
Blood testing for metabolic, organ-function or infection concerns
Digital chest X-ray for respiratory or chest symptoms
CT when another emergency diagnosis is suspected
Flu, COVID-19, strep or RSV testing when infection may explain symptoms

The physician selects testing according to medical need.

Allergy Testing and Aftercare

NorthStar can document a suspected trigger, but comprehensive allergy testing generally occurs later with an allergist. Home test kits cannot show whether a current reaction is safe to manage at home and must not delay epinephrine or emergency help.

Discharge guidance may cover trigger avoidance, prescribed medication, recurrent warning signs, epinephrine use, an emergency action plan and follow-up with primary care or an allergist.

The exact trigger may not always be identified during the emergency visit.

Emergency Diagnostic Capabilities

Testing When Symptoms Need More Investigation

Testing supports evaluation of complications or alternative causes. It does not delay treatment when anaphylaxis is suspected.

Oxygen & Vital Signs

Continuous assessment of breathing, circulation and treatment response.

EKG & Cardiac Markers

May be used for chest symptoms, fainting or substance exposure.

Laboratory Testing

May assess metabolic, organ-function, infection or exposure-related concerns.

Digital Chest X-Ray

May help evaluate respiratory or chest symptoms.

Multi-Slice CT

May be used when another emergency diagnosis is suspected.

Respiratory Testing

Flu, COVID-19, strep or RSV testing when infection may explain symptoms.

Your Emergency Visit

What to Expect at NorthStar

Severity Assessment

Airway, breathing, circulation, swelling, rash, digestive symptoms and alertness are assessed.

Emergency Treatment

When anaphylaxis is suspected, treatment begins without waiting for allergy testing.

Monitoring

Vital signs and treatment response are observed; testing is added when medically needed.

Discharge or Transfer

Receive medication and return guidance, or transfer when intensive care is required.

Why NorthStar

Allergic-Reaction Emergency Care in One Location

Open 24/7

Emergency physicians available nights, weekends and holidays.

Adults & Children

Age-appropriate emergency evaluation, including pediatric allergic symptoms.

Treatment & Monitoring

Emergency airway, breathing and circulation support based on medical need.

Round Rock 78681

Convenient to Round Rock, Pflugerville, Hutto and Georgetown.

Helpful Answers

Allergic Reaction & Anaphylaxis FAQs

When should I call 911 for an allergic reaction?

Call 911 for trouble breathing, wheezing, throat or tongue swelling, fainting, confusion, severe weakness or rapidly worsening symptoms. Use prescribed epinephrine immediately as directed.

Can anaphylaxis occur without hives?

Yes. A severe reaction may affect the airway or circulation without an obvious rash. Do not wait for hives when breathing difficulty, throat swelling or faintness is present.

Should I use an antihistamine or epinephrine?

Epinephrine is the first-line emergency treatment for anaphylaxis. Antihistamines do not replace it. Follow the prescribed action plan and call 911.

Can NorthStar treat a baby's allergic rash?

NorthStar provides pediatric emergency evaluation. Call 911 for a baby with breathing difficulty, facial or throat swelling, blue or gray coloring or reduced responsiveness.

Does NorthStar offer allergy testing?

NorthStar can evaluate an acute reaction, but comprehensive trigger testing is generally completed later by an allergist. Do not delay emergency treatment to use a home test kit.

Is wheezing asthma or an allergic reaction?

It can be difficult to tell. Wheezing with hives, swelling, faintness, vomiting or rapid onset after exposure may indicate anaphylaxis. Use prescribed epinephrine and call 911 when anaphylaxis is possible.

When do hives require emergency care?

Call 911 when hives occur with breathing difficulty, throat tightness, facial or tongue swelling, fainting or severe vomiting. Widespread or persistent hives may still need medical evaluation.

Can eyelash adhesive or acrylic nails cause an allergic reaction?

Yes. Adhesives, acrylates and solvents can cause irritation or allergy. Seek prompt care for severe swelling, eye pain, vision changes, spreading rash or breathing symptoms.

Can allergic symptoms return after treatment?

Yes. Symptoms can sometimes recur after initial improvement. A physician determines the appropriate monitoring period and discharge plan based on severity, response and risk factors.

What should I bring?

If readily available, bring identification, medication and allergy lists, the suspected product or medication label and the patient’s epinephrine device. Never delay emergency help to gather documents.

Round Rock, TX 78681 · Open 24/7

Get Emergency Care for a Serious Allergic Reaction

Call 911 for breathing difficulty, throat or tongue swelling, fainting or rapidly worsening symptoms. Use prescribed epinephrine immediately as directed.