Cystic fibrosis

Cystic fibrosis is a hereditary disease in which the function of the exocrine glands is disrupted, and the respiratory and digestive systems are primarily affected. The disease is associated with a gene mutation and is passed on from parents, so monitoring by a pulmonologist, gastroenterologist and geneticist is required from early childhood. Timely medical support helps maintain the function of the lungs and digestive tract and improves the quality of life.

Which doctorPulmonologist, also a geneticist and paediatrician
UrgencyRoutine appointment
Reviewed byMedical editorial team
Updated

If cystic fibrosis is suspected, a planned appointment with a paediatrician or pulmonologist is needed for examination. Emergency care is required for severe difficulty breathing, a high temperature or dehydration.

Main

  • Cystic fibrosis is a hereditary disease: the altered gene is passed on from both parents, even if they are healthy.
  • The sweat test determines the salt content in sweat and serves as the main confirmatory test when the condition is suspected.
  • A persistent cough with thick sputum and frequent loose stools are signs from the respiratory and digestive systems.
  • A pulmonologist manages the patient, while a geneticist and a paediatrician join the follow-up if necessary.
  • Daily physiotherapy and enzyme intake support breathing and food absorption, and they are followed continuously.

What is cystic fibrosis

Cystic fibrosis is a hereditary disease in which the function of the glands is disrupted, and the mucus in the lungs and other organs becomes too thick. This leads to difficulty breathing, frequent infections and digestive problems.

What happens in the body

Cystic fibrosis affects the function of the glands that produce mucus, sweat and digestive juices. Normally these secretions are liquid and pass freely through the ducts, performing their task. In the disease, the mucus becomes too thick and viscous, so it is retained in the lungs and blocks the airways. In the lungs, the stagnation of mucus creates conditions for frequent infections that recur again and again. The thick secretions also interfere with digestion: pancreatic enzymes reach the intestine less effectively, so food is not fully absorbed. A child may lag behind in weight, cough frequently and complain of a lack of air during exertion. It is important for parents to discuss with a doctor as early as possible any recurring signs from the respiratory and digestive systems.

What causes it to develop

  • Hereditary transmission of the altered gene: a child receives changes in a certain gene from both parents, and then the disease develops.
  • Carrier status in the parents: the mother and father may be completely healthy, but each passes on one altered copy of the gene to the child.
  • Close relatives with the disease: if a brother, sister or another close relative already has this condition, the risk for the child becomes higher.
  • Lifestyle and environment: diet, ecology, harmful habits and working conditions do not cause the disease and do not influence its occurrence.
  • Practical conclusion: if the disease is present in relatives, it is worth discussing possible risks for future children with a doctor in advance.

Who faces this more often

Cystic fibrosis occurs in children whose both parents turned out to be carriers of the altered gene, regardless of their own state of health. Carrier status itself does not manifest with any signs, so it is usually discovered by chance or after the birth of an affected child. If the changes in the gene are present in only one parent, the child does not become ill, but may become a carrier themselves. The risk increases when there have already been cases of this condition among close relatives in the family. Boys and girls are affected equally often, and nationality and place of residence do not influence this. The disease does not depend on diet, ecology, harmful habits or the working conditions of the parents. Families where there is already an affected child should discuss the risks for subsequent children with a geneticist.

What symptoms can occur?

Cystic fibrosis usually makes itself known in early childhood, but sometimes it is also detected in adults. The signs are linked to the build-up of thick mucus in the lungs, pancreas and other organs.

How it is noticed at the very beginning

Cystic fibrosis is noticed at the very beginning by a persistent cough with thick sputum that does not go away after ordinary colds. Parents often explain such a cough by frequent respiratory infections and put it all down to a weak immune system. At the same time the child lags behind in growth and weight, although they eat enough and do not refuse food. Stools become frequent, loose and foul-smelling, which is also attributed to diet or a gut infection. The skin feels salty to the touch, and this is noticed when kissing or after bathing. On exertion, breathlessness appears, which is taken for ordinary tiredness or a lack of fitness. If such signs persist together and do not go away, it is worth showing the child to a paediatrician or pulmonologist for examination.

Signs that occur most often

  • Persistent cough with thick sputum: mucus in the lungs is retained and is coughed up poorly, so the cough lasts a long time and recurs.
  • Frequent respiratory infections: stagnant mucus becomes a medium for repeated inflammation, and colds come one after another.
  • Lagging behind in growth and weight: nutrients are poorly absorbed, so the child grows and gains weight more slowly than their peers.
  • Frequent loose foul-smelling stools: this is how impaired pancreatic function manifests, and it is noticeable from the nature of the stools.
  • Salty taste of the skin: a lot of salt is lost with sweat, and the skin tastes salty, which parents notice by chance.
  • Breathlessness on exertion: because of changes in the lungs, there is not enough breath when running and playing, and the child tires quickly.

When to seek help urgently

When to seek help urgently
SignHow urgentWhat to do
Suspected cystic fibrosisRoutineConsult a paediatrician or pulmonologist for examination
Severe difficulty breathingUrgentCall an ambulance
High temperatureUrgentCall a doctor or an ambulance
DehydrationUrgentCall an ambulance
Deterioration before your eyesUrgentDo not wait, call an ambulance

Examinations and tests

Tests for cystic fibrosis help confirm the diagnosis and assess the condition of the respiratory and digestive organs. The doctor selects them sequentially, relying on symptoms, medical history and the results of special tests.

How the examination begins

Diagnosis of cystic fibrosis begins with a detailed conversation between the doctor and the patient or their parents. The specialist clarifies how long the complaints have been observed, how the child is gaining weight and how often respiratory problems occur. Special attention is paid to family history: cases of the disease in close relatives change the course of the examination. The doctor then proceeds to the physical examination and prescribes the sweat test as the main confirmatory test. This test determines the salt content in sweat, and if it deviates from the norm, the result indicates cystic fibrosis. If the sweat test is inconclusive, genetic testing is added to identify changes in the gene. Newborns additionally undergo a blood test for immunoreactive trypsin as part of screening. The collected data allow the doctor to plan further tactics and not lose time.

What is prescribed and what it shows

What is prescribed and what it shows
TestWhat it showsWhen it is prescribed
Sweat testSalt content in sweatWhen the disease is suspected
Genetic testingChanges in the geneTo confirm the diagnosis
Blood test for immunoreactive trypsinAbnormalities in newbornsAs part of neonatal screening
Chest X-ray or computed tomographyCondition of the lungsFor respiratory disorders
Lung function testingFunctioning of the respiratory systemTo assess the severity of the damage

What to prepare for the appointment

  • Discharge summaries from the medical history: they show how the symptoms developed and what tests have already been carried out before.
  • Results of previous tests: repeat tests are sometimes unnecessary if the data have been preserved and remain relevant.
  • Observation diary: records of weight, appetite and the frequency of respiratory episodes help the doctor see the dynamics.
  • List of questions: questions formulated in advance will prevent you from forgetting something important during a short consultation.
  • Family history: information about similar cases in relatives clarifies the direction of further examination.

Which doctor should I see?

Cystic fibrosis is managed by a pulmonologist, with a geneticist and a paediatrician assisting. Below is a breakdown of who to contact, what happens at the first appointment and what areas of care make up the support.

Which specialist manages this condition

Cystic fibrosis is managed by a pulmonologist, and if necessary a geneticist and a paediatrician are brought in for monitoring. The pulmonologist assesses how the respiratory system works and monitors the condition of the lungs at every appointment. The geneticist explains the hereditary nature of the condition and helps to make sense of the family history. The paediatrician accompanies the child from an early age and monitors overall development and nutrition. If there is no specialist pulmonologist nearby, start with a paediatrician or a general practitioner at your place of residence. Such a doctor will gather initial information and refer you to the right specialist at a large centre. Do not delay seeking help if new complaints appear or your well-being worsens.

What treatment consists of

  • Selection of therapy: the doctor individually selects treatment to thin the mucus and ease breathing, and reviews it regularly.
  • Physiotherapy: special exercises and techniques help clear the lungs of accumulated mucus and maintain their function.
  • Enzymes: they are prescribed to improve digestion and help the body absorb nutrients from food.
  • Antibacterial therapy: if an infection develops, the doctor selects treatment to stop the inflammation and prevent it from spreading.
  • Monitoring by specialists: the pulmonologist and other doctors regularly examine the patient and adjust the care as the condition changes.
  • Surgery: for certain indications, surgical intervention is discussed, for example a lung transplant.

What depends on the patient themselves

The regularity of monitoring and precise adherence to the doctor's recommendations largely determine how long a stable condition is maintained. Missed appointments and interruptions in the prescribed care are not noticeable immediately, but gradually accumulate. Daily physiotherapy and exercises to clear the lungs require time and patience, but it is precisely they that support breathing. Nutrition and taking enzymes also need to be followed constantly, otherwise the absorption of food suffers. If new complaints appear, it is important not to wait for a scheduled visit, but to inform the doctor about it. Keeping a diary of your well-being helps the specialist more accurately assess what changes between appointments. An open conversation with the doctor about difficulties and doubts allows the care to be adjusted in time.

What helps prevent an exacerbation?

In cystic fibrosis, much depends on the everyday decisions of the person themselves and their loved ones. Regular monitoring and sensible habits reduce the risk of exacerbations and help preserve the usual rhythm of life for longer.

What to change in your habits

Daily habits in cystic fibrosis affect how often exacerbations occur and how severe they are. A diet with sufficient calories and salt in hot weather maintains strength and helps cope with increased strain. At home, it is useful to keep things clean, air the rooms more often and avoid contact with dust and tobacco smoke. Physical activity, feasible and regular, helps sputum come up better and trains the respiratory muscles. It is important to strictly follow the doctor's care recommendations, including daily procedures, even when you feel well. Vaccination reduces the risk of infections, which in people with cystic fibrosis are more severe and more often cause complications. At the first signs of a cold or worsening breathing, do not wait until things get worse — it is better to contact your attending doctor right away.

What to keep under control

  • Weight and nutrition: regular weighing and sufficient calories help notice weight loss in time and adjust the diet.
  • Breathing and cough: a change in the nature of the cough, the appearance of breathlessness or wheezing is a reason to tell the doctor without delay.
  • Sputum: its colour, amount and viscosity change with an incipient exacerbation, so it is important to notice such changes and describe them to the doctor.
  • Temperature and general well-being: unexplained weakness, loss of appetite and a rise in temperature often warn of the onset of an infection.
  • Vaccination: vaccinations according to the schedule and on the doctor's recommendation reduce the risk of severe infections that trigger exacerbations.
  • Observation diary: short notes about how you feel, your weight and symptoms help the doctor see unfavourable dynamics earlier.

How often to see the doctor

Regular visits to the doctor in cystic fibrosis are needed even when the person feels quite well. Scheduled check-ups make it possible to notice changes that the patient does not yet feel and to adjust care in time. At the appointment, breathing, weight, nutrition and general condition are assessed, and it is also clarified how daily procedures are performed. The doctor may refer you for additional tests to check the function of the lungs and other organs. If new symptoms appear or your well-being worsens, the visit is not postponed until the scheduled date. Between appointments, it helps to keep in touch with the medical facility and ask questions without waiting for an exacerbation. Such a rhythm of monitoring does not replace the prescribed treatment, but makes it more precise and timely.

What is worth remembering

The conversation about cystic fibrosis should end with what remains with the reader after becoming familiar with the signs, examinations and everyday limitations. Below are the conclusions that help make a balanced decision without haste and unnecessary mistakes.

Main conclusions

Cystic fibrosis is a condition a person lives with constantly, rather than encountering only at the moment of an exacerbation. Recurring signs from the respiratory and digestive systems, rather than a single episode, help to notice it. Examinations for cystic fibrosis are prescribed by a doctor, and their results add up to an overall picture rather than being read separately. Treatment for cystic fibrosis is selected individually and reviewed over time, so previous prescriptions are not carried over to a new period on one's own. Everyday habits and regular monitoring noticeably affect how often exacerbations occur. A visit to a specialist should not be postponed when complaints worsen: seeking help early gives the doctor more options. Cystic fibrosis requires follow-up with a single specialist who knows the history and sees changes over time.

Portal Editorial TeamMedical editorial team

Covers what does not belong to a single specialty: how an appointment works, what to bring with you, how to read a referral. Every text is reviewed by a relevant doctor before publication.

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Questions and answers

Answered by the article’s medical editor.

Can cystic fibrosis be suspected in an adult if there were no signs in childhood?

Yes, sometimes the disease is detected already in adults. At the same time, the complaints usually stretch back to childhood, they were simply not paid attention to: a prolonged cough, frequent colds, poor weight gain. An adult should start with a general practitioner or a pulmonologist, who will assess the history of complaints and decide whether an examination is needed.

Is cystic fibrosis inherited if only one of the parents is ill?

No, in such a situation the child does not become ill. For the disease to develop, changes in the gene must come from both parents, even if they themselves are healthy. If the altered copy was inherited from only one, the child remains healthy but may be a carrier. This should be discussed with a geneticist when planning children.

Are frequent respiratory tract infections dangerous in cystic fibrosis?

Yes, they are among the main threats. Thick mucus stays in the lungs and serves as a medium for repeated inflammation, and over time the respiratory tissue is damaged more and more. Therefore, any new episode of infection is important to show to a doctor, rather than treat at home. Seeking help early gives more opportunities to preserve lung function.

Can you play sports with cystic fibrosis?

Usually yes, feasible activity is beneficial. Movement helps sputum come up better and trains the respiratory muscles, so walks, swimming and outdoor games are often beneficial. The specific level of exertion should be discussed with a pulmonologist, especially if shortness of breath has appeared or your well-being has worsened.

Can you work with cystic fibrosis?

Usually yes, many adults work. Restrictions depend on the condition of the lungs and on how regularly the daily procedures are performed. It is better to choose work without constant contact with dust, smoke and strong odours. A change of shift or working conditions should be discussed with the attending doctor.

How does cystic fibrosis affect pregnancy?

There is no single answer, everything is decided individually. The disease itself does not rule out pregnancy, but carrying a child puts additional strain on breathing and nutrition, so preparation is discussed with a pulmonologist and a geneticist in advance. It is also useful for the partner to find out whether he is a carrier of the altered gene.

How do the manifestations differ in children and in the elderly?

Usually in children the signs are more noticeable and appear earlier. At an early age these are a constant cough, frequent infections, slow weight gain and salty skin. In older people, the accumulated changes in the lungs and problems with food absorption come to the fore, and the complaints may be vague.

When in cystic fibrosis should you call an ambulance rather than go to a doctor routinely?

Urgently, if breathing has suddenly become difficult, a high temperature has appeared or there are signs of dehydration. In these cases, you cannot wait for a routine appointment, an ambulance is needed. If the condition is deteriorating before your eyes, the call should not be postponed either. With an ordinary worsening of the cough, it is enough to contact the attending doctor.

How long do you need to be followed up by a specialist?

Constantly, throughout your whole life. Cystic fibrosis does not go away and is not treated once and for all, so follow-up is continuous, and the care is reviewed over time. Even with good well-being, routine visits are needed in order to notice changes that the person themselves does not yet feel.

Can you have vaccinations with cystic fibrosis?

Usually yes, vaccination is recommended. Infections in people with this disease are more severe and more often cause complications, so vaccinations according to the schedule help reduce the risk. The specific list and timing should be agreed with the attending doctor, taking into account the current condition.