What are the symptoms of RSV?
Respiratory syncytial virus (RSV) is a common respiratory virus that can affect the nose, throat and lungs. Symptoms often resemble a common cold and include a runny nose, nasal congestion, cough, sneezing, fever, reduced appetite and fatigue. Some people develop wheezing, rapid breathing or difficulty breathing when the infection affects the lower respiratory tract. Most infections are mild, but RSV can cause serious illness in young infants, older adults and people with certain heart, lung or immune conditions. Seek prompt medical assessment if symptoms worsen, breathing becomes difficult, or a child is unable to drink enough fluids. Severe breathing difficulty, bluish lips or face, or reduced responsiveness requires emergency medical care.
What is RSV?
Respiratory syncytial virus, commonly called RSV, is a contagious virus that infects the respiratory tract. It can affect people of every age, including infants, children, adults and older people.
In many cases, RSV causes a mild respiratory illness. However, it can sometimes spread to the lower airways and cause bronchiolitis, which involves inflammation of the small airways, or pneumonia, an infection affecting the lungs.
RSV is particularly important in infants because their airways are small and breathing or feeding difficulties can develop as the illness progresses. Older adults and people living with chronic lung disease, heart disease or weakened immunity may also be at greater risk of severe illness.
Recognising symptoms early helps families understand when home observation may be reasonable and when professional medical assessment is necessary.
What are the common RSV symptoms?
RSV symptoms can develop gradually rather than appearing all at once. The early symptoms may be difficult to distinguish from those of a common cold, influenza or other respiratory infections.
Common symptoms include:
- Runny nose or nasal congestion
- Cough
- Sneezing
- Fever, which may not occur in every person
- Reduced appetite
- Sore throat or general discomfort
- Fatigue or lower-than-usual activity
- Wheezing in some cases
Some people experience only mild symptoms. Others, particularly those at higher risk, may develop signs of lower respiratory tract involvement.
Important: A cough, fever or runny nose does not confirm RSV. A healthcare professional can assess symptoms, breathing, medical history and whether testing is appropriate.
RSV symptoms in babies and infants
Parents and caregivers should pay particular attention to changes in an infant’s breathing, feeding and normal activity.
Possible RSV symptoms in babies include:
- Runny or blocked nose
- Cough
- Reduced feeding or difficulty feeding
- Irritability
- Unusual tiredness or reduced activity
- Wheezing
- Rapid or laboured breathing
Very young infants may not develop the typical symptoms seen in older children. Sometimes, reduced activity, poor feeding or breathing difficulty may be more noticeable than fever.
When should a baby with possible RSV be examined?
Arrange prompt medical assessment if your baby is feeding less than usual, has worsening symptoms, develops wheezing or appears to be breathing faster than normal.
Seek emergency medical care if the baby has significant difficulty breathing, the skin between or below the ribs pulls inward with each breath, the lips or face turn bluish, or the baby is unusually unresponsive.
Young infants, particularly those under six months, are at increased risk of severe RSV illness. Do not wait for every symptom to appear before seeking help.
RSV symptoms in older children
In older children, RSV may initially look like a common cold. Symptoms can include nasal congestion, sneezing, cough, fever and reduced appetite.
Some children develop wheezing or more noticeable breathing difficulty when the lower airways become affected.
Parents should observe whether the child is drinking fluids, urinating normally, interacting as usual and breathing comfortably.
Seek medical assessment if symptoms worsen, a child is drinking poorly, wheezing develops, or the cough and breathing problems interfere with normal activity or sleep.
A child who is struggling to breathe, has bluish lips, becomes difficult to wake or shows marked chest retractions needs urgent emergency evaluation.
RSV symptoms in adults
RSV can infect adults repeatedly throughout life. In many otherwise healthy adults, it causes a mild illness resembling a common cold.
Symptoms may include:
- Runny nose and congestion
- Cough
- Sneezing
- Sore throat
- Headache
- Fatigue
- Fever
- Reduced appetite
Older adults and adults with asthma, chronic obstructive pulmonary disease (COPD), heart disease or weakened immunity may develop more serious complications.
For example, a respiratory infection may worsen an existing lung condition, causing increased breathlessness, wheezing or a need for medical treatment.
When should adults seek medical care?
Arrange a medical assessment if respiratory symptoms are worsening, fever persists or returns after improvement, cough is accompanied by increasing breathlessness, or an existing heart or lung condition becomes harder to manage.
Severe shortness of breath, persistent chest pain or pressure, confusion, collapse or bluish lips requires emergency medical care.
RSV versus a common cold: What is the difference?
RSV can look very similar to a common cold, so symptoms alone may not establish which virus is responsible.
| Feature | Common cold | RSV infection |
|---|---|---|
| Runny nose and congestion | Common | Common |
| Cough | Common | Common |
| Fever | Sometimes | Sometimes |
| Wheezing | Less typical, but possible | Can occur, especially with lower-airway involvement |
| Breathing difficulty | Not typical in an uncomplicated cold | Can develop in more serious illness |
| Higher-risk groups | Depends on the infection and individual | Young infants, older adults and people with certain underlying conditions |
This comparison is a general guide, not a diagnostic tool. Other viruses can cause similar symptoms, and RSV itself can range from mild to severe.
A clinician may recommend testing when the result could influence clinical decisions, particularly in higher-risk patients or more serious illness.
How does RSV spread?
RSV spreads mainly through infectious respiratory particles released when an infected person coughs or sneezes. Transmission can also occur through close contact and contaminated hands or surfaces followed by touching the eyes, nose or mouth.
The virus can spread in households, childcare settings, schools and other places where people are in close contact.
To reduce transmission:
- Wash hands regularly with soap and water.
- Cover coughs and sneezes and dispose of tissues safely.
- Avoid close contact with people who are unwell, particularly vulnerable infants and older adults.
- Clean frequently touched surfaces.
- Improve indoor ventilation when practical.
- Avoid visiting vulnerable people when you have respiratory symptoms.
These measures reduce exposure risk, although they cannot eliminate every possibility of infection.
Who is at higher risk of severe RSV?
Anyone can develop RSV, but some groups have a higher risk of serious illness.
These include:
- Young infants, especially those under six months
- Premature babies
- Children with certain underlying heart or lung conditions
- Older adults
- People with chronic respiratory disease, including COPD
- People with significant heart disease
- People with weakened immune systems
Risk depends on age, underlying health, the severity of infection and other clinical factors.
If someone in a higher-risk group develops respiratory symptoms, seek advice early rather than waiting for severe breathing problems.
How is RSV diagnosed?
RSV cannot be reliably diagnosed from symptoms alone because its symptoms overlap with other respiratory infections.
A clinician may assess:
- The person’s age and medical history
- The duration and progression of symptoms
- Breathing rate and effort
- Oxygen saturation when indicated
- Hydration and feeding in children
- Signs of lower respiratory tract involvement
Depending on the clinical situation, an RSV test or other respiratory-virus testing may be considered. Not every person with mild cold-like symptoms needs testing.
If the patient has significant breathing difficulty, emergency assessment and stabilisation take priority over waiting for a test result.
How is RSV treated?
Most RSV infections improve with supportive care over time. There is no routinely recommended specific antiviral treatment for uncomplicated RSV infection.
Depending on symptoms and the patient’s condition, supportive care may include:
- Adequate fluid intake
- Rest
- Appropriate management of fever or discomfort
- Nasal saline and gentle nasal clearing when suitable for infants
- Medical monitoring when symptoms or risk factors warrant it
A clinician may recommend oxygen, fluids or hospital-based supportive treatment for more serious illness.
Do not give aspirin to children. Do not start antibiotics, cough medicines or other medicines for a child without appropriate medical advice. Antibiotics do not treat RSV itself, although a clinician may prescribe them if a separate bacterial infection is identified.
People with asthma or COPD should follow their clinician-provided action plan and seek medical advice if their symptoms worsen.
Can RSV be prevented?
No prevention method provides complete protection, but several measures can reduce the risk of infection and severe illness.
Everyday precautions
- Wash hands regularly.
- Avoid close contact with people who have respiratory symptoms.
- Keep indoor spaces ventilated where practical.
- Clean frequently touched surfaces.
- Avoid exposing newborns and vulnerable older adults to people who are currently unwell.
RSV immunisation
RSV preventive products are available in some countries for specific groups, including certain infants and older adults. Recommendations, availability, eligibility and cost vary by country.
Pregnant people and families of young infants can ask their obstetrician or paediatrician about locally available RSV prevention options and whether any are appropriate. Older adults and people with underlying medical conditions can discuss their individual eligibility with their healthcare professional.
Do not assume that a preventive product is available or recommended for everyone in India. Decisions should follow current local guidance and individual clinical advice.
When should you visit a doctor for RSV symptoms?
Consider medical assessment when:
- A child or adult has worsening cough, wheezing or breathing symptoms.
- An infant feeds poorly or has fewer wet nappies than usual.
- A person with asthma or COPD develops worsening respiratory symptoms.
- An older adult with heart or lung disease becomes noticeably weaker or more breathless.
- Symptoms worsen after initially improving.
- You are concerned about a vulnerable person’s condition.
Seek emergency medical care immediately for severe or rapidly worsening breathing difficulty, bluish lips or face, marked chest retractions in a child, collapse, confusion or reduced responsiveness.
If you are unsure how serious the symptoms are, contact a healthcare professional promptly. Do not delay emergency care while seeking advice online.
Respiratory care in ECIL and Nagaram, Hyderabad
Families in ECIL, Nagaram, Kapra, AS Rao Nagar, Kushaiguda and surrounding areas of East Hyderabad can seek medical evaluation when respiratory symptoms persist or worsen.
At Health Adda Hospitals, Dr. ANV Koteswara Rao, Senior Physician and Pulmonologist, provides respiratory and general medical care. The appropriate assessment depends on the patient’s age, symptoms, medical history and clinical findings.
Health Adda Hospitals
Address: ECIL – Keesara Rd, ECIL, Aravind Nagar, Nagaram, Secunderabad, Telangana 500083
Website: https://healthaddahospitals.com/
For information about available services, visit the hospital’s specialties page or doctor profile.
- Specialties: https://healthaddahospitals.com/specialties/
- Dr. ANV Koteswara Rao: https://healthaddahospitals.com/dr-anv-koteswara-rao-2/
If a child or adult has severe breathing difficulty or another emergency warning sign, seek emergency care immediately.
Frequently asked questions about RSV
1. What are the first symptoms of RSV?
Early symptoms commonly include a runny nose, congestion, cough, sneezing, reduced appetite and sometimes fever. Symptoms may develop gradually, and early RSV can resemble a common cold.
2. How do I know if my child has RSV?
You cannot reliably identify RSV from symptoms alone. A clinician can assess the child’s symptoms and determine whether testing is appropriate. Breathing difficulty, poor feeding or worsening symptoms require prompt assessment.
3. Can adults get RSV?
Yes. RSV affects adults as well as children. Many healthy adults have mild symptoms, but older adults and people with certain heart, lung or immune conditions can develop more serious illness.
4. How long does RSV usually last?
Many RSV infections improve within one to two weeks, although cough and other symptoms can last longer in some people. The duration varies according to age, health status and illness severity. Worsening symptoms should be assessed rather than judged by duration alone.
5. Is RSV more dangerous for babies?
RSV can cause serious lower respiratory tract illness in young infants, particularly those under six months, and in premature babies or infants with certain underlying conditions. Poor feeding and breathing difficulty are important warning signs.
6. Can RSV cause wheezing?
Yes. RSV can affect the lower airways and cause wheezing, rapid breathing or breathlessness. Wheezing can also occur with other conditions, so clinical evaluation may be needed.
7. Is there a specific medicine for RSV?
There is no routinely recommended specific antiviral treatment for uncomplicated RSV infection. Treatment is generally supportive, with oxygen, fluids and hospital care when clinically necessary. Treatment decisions should be made by a healthcare professional.
8. When should I take my child to the hospital for suspected RSV?
Seek prompt medical assessment if your child is feeding poorly, has worsening symptoms or is breathing faster than usual. Severe breathing difficulty, bluish lips or face, chest retractions or reduced responsiveness requires emergency medical care.
9. Can RSV worsen asthma or COPD?
RSV and other respiratory infections can worsen underlying respiratory conditions. People with asthma or COPD should follow their clinician-provided management plan and seek medical advice if symptoms worsen.
10. Where can I seek respiratory care near ECIL?
Health Adda Hospitals is located on ECIL–Keesara Road in Nagaram, Secunderabad. Visit https://healthaddahospitals.com/ to explore its services and information about Dr. ANV Koteswara Rao.
Medical disclaimer
This article is intended for general health education and does not replace an individual medical assessment, diagnosis or treatment plan. Seek professional advice for concerning symptoms and emergency care for severe breathing difficulty or other emergency warning signs.
About the author
Dr. ANV Koteswara Rao is a Senior Physician and Pulmonologist at Health Adda Hospitals, Hyderabad. The hospital provides multispecialty care, including respiratory services. Readers can visit the hospital’s official website for further information about its services and clinicians.