# Symptoms and phases of Fabry disease
Fabry disease is a progressive disorder that usually develops in stages. The course varies considerably from person to person: some have serious symptoms as early as childhood, others only notice something much later. Below, we describe the typical symptom patterns and how they usually sign in.
Childhood phase (usually 5—30 years)
In this phase, the first noticeable symptoms often appear. Many children and young adults with Fabry have pain symptoms quite early.
**Common symptoms: **
- **Pain in the hands and feet** — this is the first signal for many patients. The pain can feel shooting, burning or tingling and mainly occurs after exercise, heat, or stress. This is also known as the “Fabry crisis” when it occurs acutely.
- **Tiredness and reduced ability** — children can be more fatigued than peers, especially after physical activity.
- **Skin changes** — red spots or spots on the skin, especially around the navel, buttocks and upper thighs. These can darken when heated.
- **Fluid building** — swelling of the feet and ankles, especially at the end of the day.
- **Eye and ear systems** — cloudy corneas (usually without vision problems), tinnitus (whistling in the ear), hearing problems.
- **Stomach and bowel complaints** — stomach pain, diarrhea or constipation.
**Effects on daily life: **
The pain can seriously disrupt school or work. Some young people need to take breaks, are unable to exercise properly, or are stiff and immobile in the morning. The skin changes can feel embarrassing, especially when puberty and social contacts become important. Fear of new attacks can also influence behavior.
**What we know about this phase: **
During this period, it was particularly well established that early treatment can help reduce symptoms. There is still not much research into the exact duration or survival rates specific to this childhood phase; that depends a lot on whether someone is being treated and how well the treatment works.
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Adult period without major organ damage (usually 20—40 years)
As patients age, the previously mentioned symptoms may persist or decrease (especially when treatment has started). In this phase, however, doctors increasingly see signs of heart, kidney and nervous system damage, although many people still feel relatively well.
**Common symptoms: **
- **Persistent or worsened pain** in the hands and feet (in patients without treatment)
- **Heart complaints** — palpitation, shortness of breath during exercise, irregular heartbeat. Many patients still feel little of this in their daily lives.
- **Kidney changes** — usually no symptoms are felt, but blood and protein in the urine may indicate that the kidneys are being affected.
- **Brain complaints** — stroke or TIA (“minor stroke”) can occur without warning; headache and dizziness may also occur.
- **Hearing and ears** — progressive hearing loss, sometimes more in the lower tones.
- **Psychological consequences** — anxiety, depression and isolation from years of pain and uncertainty.
**Effects on daily life: **
Many adults work and live fairly normally, but remain cautious about strenuous exercise, heat, and stress. The fear of a stroke or heart problem can be high. Some feel misunderstood because they don't look sick when they have a lot of indoor rooms.
**What we know about this phase: **
Recent research (2026) shows that heart inflammation and scar tissue in the heart are common and that regular heart monitoring is important. The average time between symptoms in childhood and severe kidney disease for untreated patients is approximately 20—30 years for men and slightly longer for women, but this varies greatly from individual to individual — source: international Fabry records, earliest studies from the 2000s. With treatment, these times can be significantly delayed.
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Middle to severe phase (usually from the age of 35—50)
In this phase, the consequences for the heart, kidneys and brain become much clearer. For some this occurs earlier, for others later.
**Common symptoms: **
**Heart:**
- Severe palpitations and cardiac arrhythmias (atrial fibrillation).
- Angina pectoris (chest pain on exertion).
- Heart failure (shortness of breath, fluid accumulation in legs and lungs).
- Stroke or TIA due to blood clots in the heart.
**Kidneys:**
- Protein loss in urine increases.
- Kidney function deteriorates gradually.
- Eventually dialysis or kidney transplantation may be needed.
- High blood pressure, which is difficult to control.
**Nervous system:**
- Stroke (cerebral infarction due to blood clot or minor bleeding).
- Progressive hearing loss to deafness.
- Dizziness and balance disorders.
- Fatigue and concentration problems.
**Skin and other:**
- Skin changes may worsen or recur strongly.
- Persistent intestinal and stomach problems.
- Persistent pain in hands and feet (though sometimes somewhat less acute).
**Effects on daily life: **
This phase can truly be disabling. Many people must stop working or make significant adjustments. The frequency of hospital visits increases. Dependence on others grows, not only physically but also emotionally.
**What we know about this phase: **
Without treatment, approximately 50% of men with Fabry develop dialysis dependence around age 50 — source: various international observational studies from 2000–2010. In women this progresses on average somewhat slower, but the variation is large. With modern enzymatic or chemical treatment, many patients can remain without dialysis considerably longer. Recent research (2026) emphasises that continuous cardiac monitoring can help prevent severe arrhythmias. Individual differences are nevertheless enormous; some reach this stage much earlier or much later.
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Advanced phase (usually 50+ years, highly variable)
In this phase, kidney disease, heart failure and brain complications are central. Many patients are then dependent on dialysis or have a transplant.
**Common symptoms: **
- **Kidney disease:** dialysis multiple times per week, or kidney transplant with accompanying medication and rejection risk.
- **Heart failure:** considerable limitations in exertion, sometimes fluid accumulation, respiratory problems.
- **Brain complications:** recurrent strokes, dementia-like complaints, speech problems.
- **Infections:** dialysis patients have increased risk of infections.
- **Anaemia:** due to kidney failure and chronic illness.
- **Bone loss (osteoporosis):** dialysis and immobility accelerate this.
**Effects on daily life: **
Many patients are severely limited in mobility and require intensive medical care. Dialysis is time-consuming (3–4 hours, 3 days per week for haemodialysis). Independence decreases, and psychological burden is considerable.
**What we know about this phase: **
Patients requiring dialysis have a lower average remaining life expectancy than the general population, but many still live for years. A patient who begins dialysis at age 50 has on average several more years ahead, with variation depending on cardiac health status, comorbidities and access to care — no precise figures known from large studies, but registries provide indications. The role of new research into improved therapies (enzyme replacement therapy, migalastat, gene therapy trials underway) can offer perspective for future patients.
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When to contact your healthcare provider?
You contact your doctor or hospital **immediately** if you:
- Feel **sudden severe pain** in chest, head or abdomen.
- Have **signs of stroke**: one side of body weak, speech problems, facial drooping.
- Get **palpitations with dizziness** or faint.
- **Cannot breathe properly** or feel pain when breathing.
- Have **severe coughing** with blood in sputum.
- Have **kidney-related symptoms**: passing much less urine, fluid accumulation increases suddenly.
- Have **high fever** in combination with other symptoms.
Even when minor symptoms worsen over a long period (increasing pain, progressive hearing loss, increasing weakness), it is good to discuss this with your team at a quiet moment, so that adjustments in care or treatment can be considered.
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_This information never replaces a doctor's judgment. Always discuss your situation with your own healthcare provider._