GI Infection

Stomach Flu

Gastroenteritis (stomach flu) is a common intestinal infection causing diarrhea, vomiting, and abdominal cramps. While usually self-limiting within 2-10 days, severe dehydration can occur. Proper hydration and rest are essential for recovery. Most cases are viral and don't require antibiotics.

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Understanding

What Is Stomach Flu?

Gastroenteritis (stomach flu) is inflammation of the stomach and intestines caused by viral, bacterial, or parasitic infection. Despite its name, it's not related to influenza, which affects the respiratory system. Stomach flu causes diarrhea, vomiting, abdominal cramps, and sometimes fever.

Most cases are viral and self-limited, resolving within 2-10 days with supportive care. The main concern is dehydration, which can be serious, especially in young children, elderly, and immunocompromised individuals. Some bacterial infections may require antibiotics.

At MyDoc Urgent Care, we rapidly assess gastroenteritis severity, identify concerning findings, provide hydration support, and guide management for optimal recovery.

Typical Symptoms

  • Watery diarrhea (usually non-bloody)
  • Bloody diarrhea (suggests bacterial infection)
  • Abdominal pain or cramping
  • Nausea or vomiting
  • Loss of appetite
  • Low-grade fever (usually <101°F)
  • Muscle aches or body aches
  • Headache
  • Fatigue or weakness
  • Dehydration signs (dry mouth, thirst, dizziness)
  • Urgent need to use bathroom
  • Stomach bloating or gas

Main Causes

Viral

  • Norovirus
  • Rotavirus
  • Enteroviruses (Coxsackievirus, Echovirus)
  • Adenovirus (Types 40, 41)
  • Astrovirus
  • Sapovirus

Bacterial

  • Staphylococcus aureus
  • Salmonella species
  • Shigella species
  • Enteropathogenic E. coli (EPEC)
  • Enterotoxigenic E. coli (ETEC)
  • Shiga toxin-producing E. coli (STEC/O157:H7)
  • Campylobacter jejuni
  • Vibrio species (V. cholerae, V. parahaemolyticus)
  • Clostridium difficile

Parasitic

  • Giardia lamblia (Giardiasis)
  • Entamoeba histolytica (Amebiasis)
  • Cryptosporidium species

Prevention & Home Care

  • Wash hands frequently with soap and warm water (20+ seconds, especially after bathroom/before eating)
  • Practice proper hand hygiene especially after using toilet or changing diapers
  • Do not share towels, washcloths, or personal items during acute illness
  • Clean and disinfect contaminated surfaces and bathrooms regularly
  • Avoid preparing food for others if you have gastroenteritis
  • Stay home from work/school/childcare during acute illness (at least 24 hours after diarrhea stops)
  • Do not share eating utensils, cups, or drinking containers
  • Separate bathroom use if possible when household member is ill
  • Cook foods to proper internal temperatures (use food thermometer)
  • Refrigerate perishable foods promptly; don't leave at room temperature >2 hours
  • Wash fruits and vegetables under running water before consuming
  • Avoid unpasteurized dairy products and raw/undercooked eggs
  • Avoid drinking untreated water when traveling (drink bottled/boiled water)
  • Avoid ice made from untreated water in developing countries
  • Wash hands after contact with animals, reptiles, or pets
  • Practice food safety: prevent cross-contamination of raw meats with other foods
  • Use separate cutting boards for raw meats and vegetables
  • Store raw meats on bottom shelf of refrigerator
  • Avoid buffets and street food in high-risk areas during travel
  • Get rotavirus vaccination if in age-appropriate range (infants)
  • Rest: Allow body to recover; sleep helps immune response
  • Hydration is priority: Drink small frequent amounts of ORS or clear fluids
  • Avoid dehydration: Monitor urine color (pale yellow = good hydration)
  • Replace lost electrolytes: Use ORS, sports drinks, or coconut water
  • Eat light foods when ready: Toast, crackers, rice, bananas once hydration established
  • Gradually resume normal diet: Advance foods as symptoms improve
  • Avoid dairy temporarily: Gastroenteritis can cause temporary lactose intolerance
  • Avoid high-fat, spicy, high-fiber foods initially
  • Stay in cool environment: Fever will break on its own; no need to bundle
  • Use acetaminophen or ibuprofen for fever/aches if needed (follow dosing)
  • Breastfeed frequently if infant: Continue breastfeeding during illness
  • Monitor diaper output: Ensure adequate wet diapers in infants
  • Observe for dehydration signs: Thirst, dry mouth, dark urine, dizziness, weakness
  • Avoid close contact: Minimize spreading to family members
  • Practice hand hygiene: Wash hands frequently to prevent transmission
  • Get adequate fluid/electrolyte intake even if not hungry
  • Avoid alcohol and caffeine: Can worsen diarrhea/dehydration
  • Avoid dairy initially: Risk of temporary lactose intolerance
  • Most cases self-limited: Improve within 1-2 weeks
  • Follow up if not improving: Seek medical care if no improvement after 10 days

When to Seek Medical Care

  • Severe Dehydration Signs: Extreme thirst, dark urine, dizziness, confusion, lethargy, dry mouth/lips
  • Bloody Diarrhea: Indicates possible invasive infection or severe intestinal injury
  • Severe Abdominal Pain: Persistent severe cramping may indicate complications like perforation
  • Fever >103°F: High fever may indicate invasive infection or severe disease
  • Persistent Vomiting: Unable to keep any fluids down for >6 hours; prevents hydration
  • Signs of Sepsis: Fever with confusion, rapid heart rate, rapid breathing, hypotension
  • Blood in Vomit: Hematemesis suggests upper GI bleeding or severe inflammation
  • Abdominal Distention: Severe bloating or distention may suggest toxic megacolon
  • Severe Headache: May indicate meningitis if accompanied by fever and neck stiffness
  • Altered Mental Status: Confusion or lethargy suggests severe infection or severe dehydration

Gastroenteritis Usually Improves on Its Own: Most cases resolve within 1-2 weeks with supportive care. The focus is on preventing dehydration and complications.

Hydration is Critical: Especially in young children, elderly, and immunocompromised individuals. Severe dehydration can be dangerous and requires urgent medical attention.

Most Don't Need Antibiotics: 80-90% of cases are viral. Antibiotics don't help and can cause harm. Specific bacteria are treated when identified.

At MyDoc Urgent Care, we assess gastroenteritis severity, provide IV hydration if needed, evaluate for complications, and manage symptoms. We're available at convenient locations in Forest Hills, East Meadow, Brooklyn, Bronx, Jackson Heights, and Little Neck for expert evaluation and care when you need it.

FAQ

Frequently Asked Questions

What is urgent care and how does it work?

Urgent care centers are designed to treat those who need attention quickly but don't require an emergency room visit. At MyDoc Urgent Care, you can walk in without an appointment and receive prompt medical attention for a wide range of non-life-threatening conditions. Our clinics are open 7 days a week, 12 hours a day (8:00 AM – 8:00 PM), providing extended access beyond typical primary care hours. We offer services such as treatment for minor injuries and illnesses, diagnostic testing, vaccinations, and preventive care. Our goal is to bridge the gap between your primary care doctor and the emergency room, ensuring you get the care you need, when you need it.

Who do we treat?

We treat patients of all ages, from infants and children to adults and seniors. Whether you have a minor illness, need a physical exam, or require urgent attention for an injury, our team is equipped to help. We welcome both long-time residents and visitors to the area. Our providers are experienced in pediatric, adult, and geriatric care, and we strive to create a welcoming, compassionate environment for every patient. If you have a chronic condition and need prompt care, we can help manage your symptoms and coordinate with your primary care provider if needed.

How do I get started?

Getting care at MyDoc Urgent Care is easy. Simply walk in to any of our locations during business hours—no appointment is necessary. If you have questions or want to check wait times, you can call us at (718) 401-1510. For added convenience, you can also check in online to reduce your wait time. When you arrive, our friendly staff will help you register and guide you through the process. Most visits are completed in under an hour, so you can get back to your day quickly.

How does Urgent Care compare to the ER or a Primary Care Doctor?

Urgent care is designed for non-life-threatening conditions that require prompt attention but are not severe enough for the emergency room. The average wait time for a primary care appointment can be over 20 days, and ER visits can last over 3 hours. At MyDoc Urgent Care, most visits are completed in less than an hour. We offer a cost-effective alternative to the ER for issues like minor injuries, infections, and illnesses. For life-threatening emergencies, such as chest pain, severe bleeding, or difficulty breathing, always call 911 or go to the nearest ER.

What about insurance?

We accept most major insurance plans for medical services, including Medicaid and Medicare. If you do not have insurance, we offer affordable self-pay rates and transparent pricing. Our staff can help you understand your benefits, answer questions about coverage, and provide cost estimates before treatment. We believe everyone should have access to quality healthcare, regardless of insurance status.

What conditions do you treat at urgent care?

We treat a wide range of conditions, including cold and flu symptoms, sore throat, ear infections, minor cuts and burns, sprains and strains, rashes, urinary tract infections, allergies, minor fractures, and more. We also provide physical exams for school, work, and sports, as well as vaccinations and on-site lab testing. If you are unsure whether we can help, call us or walk in—our team will assess your needs and provide the appropriate care or referral.

Can I get prescriptions or refills at urgent care?

Yes, our providers can prescribe medications for acute illnesses and minor conditions, such as antibiotics for infections or medications for pain relief. We can also provide short-term refills for certain maintenance medications if appropriate. Please bring a list of your current medications and any relevant medical history to your visit. For long-term medication management, we recommend following up with your primary care provider.

Do you offer pediatric urgent care?

Absolutely! Our clinics are equipped to care for children of all ages, from infants to teenagers. We understand that children have unique medical needs and strive to provide a comfortable, family-friendly environment. Our providers are experienced in pediatric care and can treat common childhood illnesses, injuries, and provide physicals and vaccinations.

What should I bring to my urgent care visit?

Please bring a photo ID, your insurance card (if applicable), a list of current medications, and any relevant medical records. If you are bringing a child, please bring their immunization records if available. Having this information helps us provide the best and safest care possible. If you have paperwork for work, school, or sports, bring that as well so we can complete it during your visit.

How do I know if I should go to urgent care or the ER?

Urgent care is appropriate for non-life-threatening conditions that need prompt attention, such as minor injuries, infections, or illnesses. If you are experiencing severe chest pain, difficulty breathing, signs of stroke, severe bleeding, loss of consciousness, or any other life-threatening emergency, call 911 or go to the nearest emergency room immediately. When in doubt, it's always better to err on the side of caution and seek emergency care.

Do I need an appointment to visit MyDoc Urgent Care?

No appointment is necessary at MyDoc Urgent Care. We welcome walk-ins at all of our locations during business hours. If you prefer, you can check in online to save time and reduce your wait. Our goal is to make healthcare as accessible and convenient as possible for you and your family.

What forms of payment do you accept?

We accept most major credit cards, debit cards, cash, and many insurance plans. If you have questions about payment or billing, our front desk staff will be happy to assist you and provide clear information about costs before your visit. We strive to make the billing process transparent and stress-free.

Can I get lab tests or X-rays at urgent care?

Yes, MyDoc Urgent Care offers on-site lab testing and X-ray services for your convenience. This allows us to quickly diagnose and treat a wide range of conditions without the need to send you to another facility. Common tests include strep throat, flu, COVID-19, urinalysis, blood work, and more. X-rays are available for injuries such as sprains, fractures, and chest concerns.

How long will my visit take?

Most visits to MyDoc Urgent Care are completed in less than an hour, including registration, evaluation, and treatment. Wait times may vary depending on the time of day and the number of patients, but we strive to provide prompt, efficient care. You can check in online to further reduce your wait time.

Can urgent care help with work or school forms?

Absolutely! We can provide physical exams for work, school, sports, and camp, as well as complete any necessary forms. Please bring any required paperwork with you to your visit. Our providers will ensure all forms are filled out accurately and promptly so you can meet your deadlines.