When your child keeps feeling unwell but there is still no clear explanation, it can be unsettling. You may wonder whether something has been missed, whether more tests would help, or why symptoms such as tiredness, pain, dizziness, headaches or abdominal problems keep returning.
This is where a general paediatric assessment can help make sense of the bigger picture. Rather than simply ordering every possible test, your paediatrician will usually look at your child’s history, examination, growth and symptom pattern before deciding whether testing, monitoring or specialist input is the most useful next step.
What Do Doctors Mean by “Unexplained Symptoms”?
The term ‘unexplained symptom’ does not mean there is no explanation; it usually means that the cause has not yet been established. It describes the current stage of the assessment rather than being a diagnosis in itself. You may see this when your child has abdominal pain, tiredness, headaches or several symptoms together without an obvious cause.
A broad paediatric assessment can be useful when your child’s symptoms involve different body systems or do not clearly point towards one specialist area. Your child’s symptoms are real, and your paediatrician can look for warning signs, understand the pattern and work through the most likely explanations.
Why Does the Medical History Matter So Much?
A detailed history helps your paediatrician understand what is happening before deciding which tests may be useful. You may be asked when symptoms started, how often they occur, how long they last, what makes them better or worse, and whether your child feels completely well between episodes.
Small details can guide the investigation, such as whether pain follows meals or wakes your child at night. You can keep a simple symptom diary to help you describe patterns, while your paediatrician uses this information to decide which possible causes need further investigation.
Clinical Tip
Before your child’s appointment, make a short timeline showing when symptoms started, how often they occur and anything that seems to trigger or relieve them. Bring an up-to-date medication list and any relevant test results or clinic letters, as this can help your paediatrician understand the pattern more efficiently.
Why Will the Paediatrician Ask About Symptoms That Seem Unrelated?
You may book an appointment for headaches and then be asked about your child’s sleep, appetite, bowel habits, school and family history. These questions help your paediatrician see the wider picture, as symptoms such as tiredness or abdominal problems can have many different causes.
A general paediatrician looks at your child’s symptoms across different body systems rather than focusing on one area alone. You may also be asked whether family members have experienced similar symptoms, as this can provide useful clues and help your paediatrician see whether some of your child’s symptoms may be connected.
What Happens During the Physical Examination?
There is no one-size-fits-all examination for unexplained symptoms. What happens at the appointment will depend on what your child has been experiencing and what has come up in their medical history. The paediatrician may check their heart rate, breathing and blood pressure before examining relevant areas such as the abdomen, heart, lungs, joints or nervous system.
Once the examination is complete, your paediatrician can consider the findings alongside the symptoms you have described and decide what, if anything, needs investigating next. A normal examination can be reassuring, although further assessment may still be appropriate if your child’s symptoms continue.
How Important Are Your Child’s Growth and Development?
Growth can give your paediatrician useful clues about your child’s overall health, so they may review their height, weight and any changes in appetite or growth over time. They may also ask about development, learning, concentration and exercise to understand whether the symptoms are affecting your child’s wider health and everyday life.
When Should You Seek Urgent Medical Help?
Persistent or unexplained symptoms are often assessed through planned appointments, but you should not wait for routine follow-up if your child becomes acutely or seriously unwell. Call 999 for a life-threatening emergency. You should also call 999 if your child has a seizure for the first time, if it lasts longer than usual for them, or for more than five minutes if you do not know how long their seizures usually last. Call 999 as well if they do not recover as usual afterwards or have another seizure without recovering between seizures.
For urgent concerns that do not appear immediately life-threatening, contact your GP or NHS 111. Seek earlier medical advice if your child’s condition changes quickly or new concerning symptoms develop, even if previous tests were reassuring.
UK Guidance Note
In England, your GP can usually provide the initial assessment for persistent or unexplained symptoms and can refer your child for paediatric review when specialist input is clinically appropriate. For urgent concerns that are not immediately life-threatening, NHS 111 can help you decide what level of care your child needs, while life-threatening emergencies require 999. If your child is under five, call NHS 111 rather than using NHS 111 online.
What Does a ‘Differential Diagnosis’ Mean for Your Child?
You may hear your paediatrician use the term “differential diagnosis”, which means the possible causes being considered for your child’s symptoms. Your doctor will use the history and examination to decide which conditions are more or less likely, rather than focusing on just one possibility.
The list does not mean your child definitely has any of these conditions. You may find that common causes are considered first, while tests are chosen to investigate the possibilities that best match your child’s symptoms.
How Will Your Paediatrician Build the Full Picture?
| Stage | What it can help establish |
| Medical history | When symptoms started, their pattern, possible triggers, associated symptoms and effects on daily life |
| Growth and development review | Whether growth, development or functioning has changed over time |
| Physical examination | Whether there are clinical signs that point towards a particular cause or require further investigation |
| Targeted investigations | Tests may be selected to answer specific clinical questions rather than as a routine checklist |
| Follow-up | Reviewing symptoms over time may reveal changes or patterns that were not clear at the first appointment |
| Specialist referral | More focused expertise may be useful if the assessment points towards a particular organ system or condition |
How Will Your Paediatrician Decide Which Tests Your Child Needs?
Rather than following the same testing checklist for every child, your paediatrician will use what you tell them and what they find during the examination to decide which investigations could genuinely help explain your child’s symptoms. Your child may be offered blood tests, imaging or other investigations when they are likely to provide useful information about their symptoms.
Your child will not always need multiple tests, as unnecessary investigations can cause worry and lead to further testing. Your paediatrician will consider which investigations are likely to be useful for your child and whether the results are likely to change what happens next.
Why Targeted Testing Matters
A BMJ review highlights that children’s biochemical test results may require age- and sometimes sex-specific reference ranges because normal values can change during growth and development. The European Academy of Paediatrics has also highlighted the potential harms of inappropriate overtesting. Together, this supports a targeted approach in which investigations are chosen to answer specific clinical questions and their potential benefits and limitations are considered before testing.
Which Blood Tests Might Your Child Actually Need?
Blood tests can help investigate certain possible causes of your child’s symptoms, but the tests they need will depend on their symptoms, medical history and clinical assessment. Depending on the assessment, your paediatrician may consider tests such as a full blood count, thyroid function, blood glucose, kidney function, inflammatory markers or tests for specific nutritional deficiencies.
Your child does not automatically need all of these tests simply because they have tiredness, dizziness or pain. Your paediatrician will consider what each result means and whether your child needs further tests, treatment or simply follow-up.
When Might Your Child Need a Scan or Specialist Test?
Imaging can help when your child’s symptoms suggest a structural problem, but your child does not automatically need a scan simply because symptoms continue. Your paediatrician may recommend or request imaging such as an ultrasound, X-ray, MRI or CT scan when it is clinically appropriate for the question being investigated. The choice of imaging also takes account of your child’s age, the part of the body being assessed and the potential benefits and disadvantages of the test, including radiation exposure where relevant.
Your child may need a different investigation, such as an ECG, echocardiogram or EEG, depending on their symptoms. Your paediatrician will also consider the benefits and drawbacks of each investigation so that your child receives appropriate testing without unnecessary investigations.
What Happens If All the Initial Tests Are Normal?
Normal test results can feel frustrating when your child still has symptoms, but they may make some conditions less likely or provide reassurance about particular concerns. You may feel you are back at the beginning, but your paediatrician can use these results to focus on other possible causes.
You may be asked to keep a symptom diary covering things such as meals, sleep or activity. Your paediatrician can then review the pattern, reassess the possible causes and decide whether your child needs follow-up or further investigation.
Myth vs Fact
| Myth | Fact |
| Normal test results mean nothing is wrong. | Normal results may make some conditions less likely, but your child may still need monitoring or further assessment if symptoms continue. |
| More tests always lead to a faster diagnosis. | Not necessarily. Tests are most useful when they answer a specific clinical question. |
| Unexplained symptoms mean the symptoms are psychological. | No. “Unexplained” simply means the cause has not yet been established. |
| A normal examination means no follow-up is needed. | Not always. Follow-up can help identify changes or patterns that were not clear at the first appointment. |
Why Might a Paediatrician Recommend Observation Rather Than More Tests?
You may expect ongoing symptoms to lead to more tests, but careful observation and planned follow-up can sometimes be the most clinically appropriate approach. If your child is otherwise well, growing normally and has a reassuring examination, your paediatrician may recommend monitoring rather than extensive investigations.
Your paediatrician should explain what changes to watch for, when your child will be reviewed and what should prompt you to seek medical advice sooner. Over time, you may notice a clearer pattern that helps your paediatrician decide whether further investigation is needed.
Can Stress or Emotional Wellbeing Affect Physical Symptoms?
Your child’s physical symptoms and emotional wellbeing can affect each other, but this does not mean the symptoms are imaginary. You may be asked about your child’s sleep, school, mood and recent changes to understand the full picture.
Your paediatrician can consider biological, psychological and social factors together while continuing to assess any medical concerns that remain relevant. Discussing stress or emotional wellbeing does not mean your child’s symptoms are being dismissed or assumed to have a psychological cause.
Why Can Follow-Up Be Just as Important as the First Appointment?
A single appointment can only show what is happening on that particular day. Seeing how your child’s symptoms change over the following weeks or months can reveal patterns that were not obvious initially and may make one possible explanation more or less likely. Follow-up also gives you the opportunity to discuss new symptoms, changes or concerns that have appeared since the first visit.
Your child’s growth, test results and response to treatment or agreed changes in areas such as diet and sleep can also be reviewed. Do not stop or change prescribed medicines unless your child’s healthcare professional advises you to do so. You should seek earlier medical advice if your child’s symptoms become severe or worsen quickly, rather than waiting for the planned appointment.
Can Too Many Tests Ever Be a Problem?
More tests do not always give you more reassurance, as results need to be considered alongside your child’s symptoms. Sometimes an incidental or borderline result can lead to further investigations even when it is not the cause of your child’s symptoms.
Rather than ordering tests simply because symptoms persist, your paediatrician will use what you tell them and what they find during the assessment to decide which investigations are genuinely useful. This can help your child get the tests they need without leading to unnecessary investigations or additional worry.
How Can You Help the Paediatrician Investigate Your Child’s Symptoms?
You do not need medical knowledge to help your paediatrician understand what your child is experiencing. Keeping clear information about symptoms and changes in your child’s daily life can make the assessment more useful and help your paediatrician identify important patterns.
- Track When Symptoms Started: Note when you first noticed your child’s symptoms and whether they appeared suddenly or developed gradually.
- Record How Often They Occur: Keeping track of how frequently symptoms happen and how long they last can help your paediatrician understand their pattern.
- Note Related Changes: Tell your paediatrician about any changes in your child’s sleep, appetite, weight, school life or usual activities.
- Bring Medical Information: You can bring a current medication list, previous test results and relevant medical letters to the appointment.
- Share Your Main Concerns: If there is something specific worrying you, mention it clearly so your paediatrician can address it during the assessment.
Providing clear information can help your paediatrician build a fuller picture of your child’s health and decide whether further investigation is needed. You may also find it helpful to keep a simple symptom diary between appointments so you can identify any changes or recurring patterns.
When Might Your Child Need a Paediatric Specialist?
If your child’s symptoms begin to point more clearly towards one part of the body or a particular condition, your paediatrician may suggest involving a specialist with expertise in that area. Your general paediatrician may refer your child to paediatric neurology, gastroenterology or endocrinology, depending on their needs.
A referral does not necessarily mean something serious has been found. Your child may simply need a specialist to assess a particular concern, while their general paediatrician can continue supporting their care if symptoms affect several areas.
Key Takeaways
- A detailed history and physical examination are usually the starting point when your child has persistent or unexplained symptoms.
- Tests should be selected according to the clinical question rather than used as a routine checklist.
- Normal initial tests do not mean your child’s symptoms are imaginary or unimportant.
- Follow-up can be an important part of diagnosis because patterns may become clearer over time.
- Seek earlier medical advice if your child’s condition worsens or new concerning symptoms develop.
Frequently Asked Questions
1. When should I take my child to a paediatrician for unexplained symptoms?
Seek medical advice if your child’s symptoms persist, keep returning, affect daily life or remain unexplained. Depending on the symptoms and care pathway, your GP may manage the initial assessment or recommend paediatric review.
2. What happens when a paediatrician investigates unexplained symptoms?
Your paediatrician will usually start by taking a detailed medical history and performing a physical examination. Depending on what they find, they may recommend tests, monitoring, follow-up or referral to another specialist.
3. Does my child always need blood tests for unexplained symptoms?
No. Blood tests are not automatically needed for every unexplained symptom. Your paediatrician will consider your child’s symptoms, examination and medical history before deciding whether a particular blood test is likely to provide useful information.
4. What tests might a paediatrician recommend?
Depending on the clinical question, investigations may include blood tests, ultrasound, X-ray, MRI or tests such as an ECG or EEG. More specialised investigations are only considered when clinically appropriate.
5. What if all my child’s test results are normal?
Normal results may make some conditions less likely or provide reassurance about particular concerns, but they do not necessarily explain every symptom. Your paediatrician may review the symptoms again, monitor your child over time or consider other possible causes.
6. Can my child have real symptoms even when tests are normal?
Yes. Normal test results do not mean that your child’s symptoms are imaginary. Your paediatrician can consider the symptoms, their pattern and your child’s overall wellbeing when deciding what support or follow-up may be appropriate.
7. Why might my paediatrician recommend observation instead of more tests?
If your child is otherwise well, growing normally and has a reassuring examination, monitoring may sometimes be more appropriate than immediate further testing. Follow-up can help identify changes or patterns that may guide the next step.
8. Can stress or emotional wellbeing affect physical symptoms in children?
Stress and emotional wellbeing can sometimes contribute to or worsen physical symptoms, but this does not mean the symptoms are not real. Your paediatrician can consider emotional wellbeing alongside possible physical causes.
9. When might my child need to see another paediatric specialist?
Your paediatrician may refer your child to a specialist if their symptoms suggest that a particular area needs further assessment. This could include paediatric neurology, gastroenterology or endocrinology, depending on your child’s needs.
10. How can I prepare for my child’s paediatric appointment?
You can make the appointment more useful by noting when symptoms started, how often they occur, how long they last and any related symptoms. You can also bring a medication list, previous test results and information about changes in your child’s sleep, appetite, weight, school or daily activities.
Final Thoughts: When Should Your Child See a Paediatrician?
If your child has persistent or unexplained symptoms, you do not always need a long list of tests to find the right next step. A careful history, physical examination and review of how symptoms change over time can help your paediatrician decide whether your child needs further investigation, monitoring or specialist assessment.
You can support the process by keeping track of symptoms and sharing any changes in your child’s sleep, appetite, weight, school or daily activities. If you’re looking for a paediatrician in London, you can get in touch with us at London Paediatric Clinic.
References:
- Royal College of Paediatrics and Child Health (RCPCH) (no date) General paediatrics – specialty level training. Available at: https://www.rcpch.ac.uk/education-careers/apply-paediatrics/sub-specialties/general-paediatrics
- Royal College of Paediatrics and Child Health (RCPCH) (2017) Facing the Future: Standards for children with ongoing health needs. Available at: https://www.rcpch.ac.uk/resources/facing-future-standards-ongoing-health-needs
- Royal College of Paediatrics and Child Health (RCPCH) (2024, updated 2025) The role of paediatricians in children and young people’s mental health – position statement 2024. Available at: https://www.rcpch.ac.uk/resources/role-of-paediatricians-child-mental-health-position
- Royal College of Paediatrics and Child Health (RCPCH) (no date) Patient safety fundamentals. Available at: https://safety.rcpch.ac.uk/fundamentals/
- NHS (2023) Referrals for specialist care. Available at: https://www.nhs.uk/nhs-services/hospitals/referrals-for-specialist-care/
- Adeli, K., Higgins, V., Trajcevski, K. and Palmert, M.R. (2018) ‘Important considerations for interpreting biochemical tests in children’, BMJ, 361, article k1950. Available at: https://www.bmj.com/content/361/bmj.k1950
- Førde, S., Herner, L.B., Helland, I.B. and Diseth, T.H. (2022) ‘The biopsychosocial model in paediatric clinical practice—An interdisciplinary approach to somatic symptom disorders’, Acta Paediatrica, 111(11), pp. 2115–2124. Available at: https://onlinelibrary.wiley.com/doi/full/10.1111/apa.16517
- Saunders, N.R., Kawamura, A., MacLeod, O., Nieuwesteeg, A. and De Souza, C. (2025) ‘Somatic symptom and related disorders: Guidance on assessment and management for paediatric health care providers’, Paediatrics & Child Health, 30(4), pp. 331–337. Available at: https://academic.oup.com/pch/article/30/4/331/8118653
- Ibeziako, P., Brahmbhatt, K., Chapman, A. et al. (2019) ‘Developing a clinical pathway for somatic symptom and related disorders in pediatric hospital settings’, Hospital Pediatrics, 9(3), pp. 147–155. Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC11034856/
- Størdal, K., Wyder, C., Trobisch, A., Grossman, Z. and Hadjipanayis, A. (2019) ‘Overtesting and overtreatment—statement from the European Academy of Paediatrics (EAP)’, European Journal of Pediatrics, 178(12), pp. 1923–1927. Available at: https://pubmed.ncbi.nlm.nih.gov/31506723/
- NHS (no date) What to do if someone has a seizure (fit). Available at: https://www.nhs.uk/symptoms/what-to-do-if-someone-has-a-seizure-fit/
- NHS (no date) When to call 999. Available at: https://www.nhs.uk/nhs-services/urgent-and-emergency-care-services/when-to-call-999/
- NHS (no date) When to use NHS 111 online or call 111. Available at: https://www.nhs.uk/nhs-services/urgent-and-emergency-care-services/when-to-use-111/