# Symptoms and Stages of Alpha-1 Antitrypsin Deficiency
Early Childhood (Neonates and Toddlers)
In newborns with severe alpha-1 antitrypsin deficiency (especially the PiZZ genotype), symptoms can appear in the first weeks to months of life, although many cases are only noticed later.
**Complaints in this stage:**
- Jaundice lasting longer than two weeks or recurring
- Dark urine
- Light, repeatedly occurring stools
- Abdominal distention (full belly without hunger)
- Growth and weight gain that lags behind
- Sometimes: coughing, wheezing or repeated lung infections (rare at this age, but possible)
These symptoms occur because malformed alpha-1 antitrypsin accumulates in liver cells and damages them. The liver cannot function properly, which prevents bile from being properly excreted. Parents notice especially that their child is sluggish, eats less or develops a strange color. Recovery of growth and play behavior does not happen as expected.
**What this means for daily life: **
The child must visit the doctor regularly for blood tests. Feeding can be difficult — the child may drink poorly or vomit a lot. Parents are often worried by the pale yellow skin. Without early recognition and management, liver problems can become more serious.
**Figures about this phase: **
- Neonatal cholestasis (bile stasis in newborns with alpha-1 antitrypsin deficiency) occurs in approximately 10–15% of infants with PiZZ deficiency (literature, 2020–2025).
- Most children who develop jaundice initially recover, but some permanent liver damage can occur.
- Without treatment, some can develop progressive liver disease in the first years of life.
These are averages for large groups; individual children can respond very differently, depending on their genetic make-up and other factors.
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Childhood (4–12 years)
Many children with moderate deficiency have few or no noticeable complaints in this period. They can play normally, go to school and grow. In others — especially those heavily exposed to smoke or who have had many lung infections — problems can arise earlier.
**Complaints in this stage (if present):**
- Repeated respiratory tract infections (more than age peers)
- Cough lasting longer than two to three weeks
- Tiredness after exertion or play
- Shortness of breath during sports
- Mucus expectoration (sputum)
- Pain under the ribs when coughing (due to inflammation of the lung membranes)
- Nausea, decreased appetite or abdominal complaints (if the liver is also involved)
**What this means for daily life: **
The child may struggle with football, running or dancing — activities that don't stand out for normal children. School days can be missed due to infections. Parents notice that their child is sick more often than friends. Coughing can be bothersome in class or at night.
**Figures about this phase: **
- Children with PiZZ deficiency have significantly more respiratory tract infections than healthy children, but lung function loss usually progresses slowly (studies 2020–2025).
- The median age at which significant lung damage (FEV1 decline) becomes noticeable varies greatly: some show loss already in childhood, others much later.
These are averages; many children with deficiency still have fairly good lung function in this stage.
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Adolescence and Young Adulthood (13–35 years)
This is a critical period. For many people with severe deficiency (PiZZ), more obvious lung damage now begins to emerge, especially if they have smoked, had many lung infections or inhaled a lot of pollution. Others still feel largely healthy.
**Complaints in this stage:**
- Increasing shortness of breath, initially only with heavy exertion, later also during normal activities
- Persistent cough, often productive (with mucus)
- Repeated or chronic respiratory tract infections
- Pain or pressure in the chest, especially after exertion
- Fatigue that does not improve with rest
- In case of liver damage: abdominal pain, bloating, easy bruising or nosebleeds
- Swollen ankles or feet (in progressive liver disease)
For those who smoke, use drugs, or inhale many fumes (work, hobby), symptoms worsen noticeably faster.
**What this means for daily life: **
Work or study can become more difficult. Young people may no longer be able to participate in sports or dancing. Social life becomes restricted: walking with friends becomes tiring, nights out feel heavy. Career choice becomes more complicated — certain jobs with dust exposure become impossible. Relationships can come under strain due to fatigue and uncertainty. Hospital check-ups become more frequent.
**Figures about this phase: **
- In adults with PiZZ deficiency and lung disease, the median age at which symptoms become noticeable is approximately 30–40 years, although this is highly variable (sources 2020–2025).
- Smoking accelerates lung damage significantly: smokers with PiZZ deficiency can develop significant emphysema in their 20s or 30s; non-smokers typically have later symptom onset.
- Liver damage in this age group is relatively rarely severe, but can occur.
These are population figures; individuals vary greatly — some feel well for a long time, others deteriorate faster.
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Adulthood (35–65 years)
This is usually the period when alpha-1 antitrypsin deficiency becomes most apparent. The progression of lung and possibly liver disease becomes clearer, although the pace varies greatly.
Lung damage in this phase:
**Symptoms:**
- Increasing shortness of breath during normal activities (climbing stairs, shopping, cleaning)
- Chronic, daily cough with mucus production
- Repeated bronchitis or pneumonia (3+ per year)
- Pain in the chest or under the ribs
- Intense fatigue, sometimes after light activity
- Wheezing
- Night sweats
- Weight loss
**What this means for daily life: **
Employees often have to take leave or switch to a lighter job. Household tasks become difficult; grocery shopping requires breaks. For many people, travel becomes challenging — airplanes, long car rides, new environments place extra demands on breathing. Sexual contact can become tiring. Sleep is disrupted by coughing. Social activities decline. Many patients feel isolated.
**Figures about this phase: **
- The median life expectancy of adults with PiZZ deficiency and lung disease is approximately 50–60 years (various studies, 2015–2025), but this is a strong oversimplification: individuals range from 30 to 80+ years.
- Non-smokers with PiZZ deficiency have an average 12–15 years longer life expectancy than smokers.
- Without treatment, lung function loss in active lung disease declines approximately 50–60 mL per year faster than in healthy people (studies 2015–2025).
These are averages across large groups; personal prognoses differ enormously and depend on many factors.
Liver damage in this phase:
For a minority of adults, the liver is progressively damaged. This varies greatly by person and can occur independently of lung disease.
**Symptoms:**
- Abdominal pain or feeling full
- Bloating and ascites (fluid accumulation in the abdomen)
- Yellowing of skin or eyes
- Dark urine
- Light, repeatedly occurring stools
- Severe fatigue (worse than from lung disease alone)
- Easy bruising, nosebleeds, or stomach bleeding
- Confusion or sleep disturbances (result of liver damage)
- Swollen ankles and feet
**What this means for daily life: **
Patients become even more limited and dependent. Nutrition can become critical — certain foods are poorly tolerated. Medication use must be carefully controlled (the liver cannot process much). Regular blood tests and ultrasounds are necessary. Fear of liver failure increases.
**Figures about this phase: **
- Severe liver disease (cirrhosis) occurs in approximately 3–5% of adults with PiZZ deficiency in Europe and North America, but this varies greatly by region and population (studies 2020–2025).
- Heterozygous carriers (for example, PiMZ) have a much lower risk of liver disease than PiZZ carriers.
- Without liver disease, the median survival risk is considerably better than with severe cirrhosis.
These are population figures; many people with PiZZ never develop severe liver disease.
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Advanced stage (>65 years or earlier advanced disease)
People who reach this age have lived long with the deficiency. Some have mild or stable disease; others have severe advanced lung and/or liver disease.
**Possible symptoms:**
- Severe shortness of breath, sometimes even at rest
- Oxygen need day and night
- Frequent lung infections, possibly with sepsis
- Coughing up blood
- Heart problems (right heart weakness due to severe lung disease)
- If the liver is involved: all signs of liver decompensation (see previous stage, more severe)
- Malnutrition and weight loss
- Frailty (lack of muscle strength and energy)
**What this means for daily life: **
Self-care becomes difficult. Patients are often dependent on help with personal hygiene, dressing, moving around. Oxygen machines become constantly necessary. Hospital visits become frequent. Living at home becomes challenging; admission to nursing homes may be needed. Many feel unwell and fear deterioration.
**Figures about this phase: **
- The median life expectancy for adults with PiZZ deficiency and advanced lung disease without transplantation is difficult to state accurately, because this group is heterogeneous. Studies suggest that most adults with symptomatic lung disease do not become much older than 70 years, but exceptions exist.
- Lung transplantation can give much better survival in selected patients (median survival after transplantation approximately 5–7 years, sometimes longer; source: ISHLT registries 2015–2025).
These are very rough estimates; individual trajectories vary greatly.
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When to contact your doctor
**Call or message your doctor if:**
- You suddenly feel much more shortness of breath, even at rest
- You cough up blood
- You have fever (>38.5°C) that doesn't go away
- Your abdomen swells quickly or feels hard and painful
- You suddenly develop confusion, severe headache, or unusual sleepiness
- You turn yellow and feel very ill
- You feel so tired that you can no longer care for yourself
**Call emergency services (112) if:**
- You can barely breathe anymore, even at rest