# Symptoms and phases of cardiac amyloidosis
Cardiac amyloidosis can progress in very different ways, depending on the type of amyloidosis (AL or ATTR) and how fast it develops. The disease is characterized by a gradual decline, but the time and speed at which symptoms occur vary greatly from person to person. The following describes how the disease generally appears in phases, from early warning signs to more advanced stages.
Early phase: pre-phase and first symptoms
In many cases, the very first signs are discovered more or less by chance, for example because someone is being examined for something else. The complaints in this phase are subtle and easy to overlook.
**Common symptoms: **
- Slight shortness of breath during exercise (first only during strenuous exercise, later also during normal activities)
- Unusual tiredness or decreased exercise capacity
- Swelling of ankles or feet, especially at the end of the day
- Irregular heartbeat or palpitations, sometimes noticeable as “fluttering” in the chest
- In case of AL amyloidosis: possible bruising (especially around the eyes), tinnitus (ringing in the ears) or stiff joints
**What this means for daily life: **
In this phase, many people can still maintain their normal routine for the most part, but they gradually find that they are able to cope with less effort. Walking, climbing stairs, or doing household chores can become tiring. Sleeping problems can occur due to swelling or irregular heartbeats, especially when lying down.
**Figures about this phase: **
The early phase is difficult to define precisely, as symptoms develop very gradually. For ATTR cardiomyopathy (the inherited or acquired type with transthyrotin protein gene abnormalities), symptoms sometimes take years to become noticeable; many people are discovered at a stage that is already more serious. For AL amyloidosis (the type that results from abnormal plasma cell activity), progression may be faster. The median time to diagnosis from first symptoms varies widely depending on type and environment; in countries with better screening programs, patients are identified earlier. Exact survival rates for the early phase alone are not reported as standard.
Advanced phase: manifest heart failure
When amyloid deposition increases further, cardiac function and symptoms clearly deteriorate noticeably. This is usually the phase in which the diagnosis is finally made.
**Common symptoms: **
- Severe shortness of breath, even at rest or at night (getting up at night for the toilet and fresh air are common)
- Severe fatigue and exercise intolerance (sometimes only short distances can be walked)
- Swelling of the abdominal area and feet (edema formation)
- Abdominal pain or feeling of fullness due to liver and stomach congestion
- Irregular heartbeat (arrhythmias), sometimes accompanied by fainting
- Chest pain or chest pressure in some cases
- In case of AL amyloidosis: possible worsening of bruising, joint pain or nerve problems (tingling, loss of muscle strength)
**What this means for daily life: **
In this phase, daily life is severely restricted. Many people are no longer able to keep their jobs. Self-care (showering, getting dressed, climbing stairs) becomes difficult or impossible without help. Social activities are severely curbed. Sleep is problematic due to shortness of breath and visits to the toilet at night. Feeding can become difficult because the stomach and stomach feel full quickly. Psychological burden is increasing due to uncertainty and dependence.
**Figures about this phase: **
For AL-cardiomyopathy, it has been reported that patients without treatment have a median survival of approximately 4–6 months (source: earlier studies preceding modern treatments, years 2010–2015). With new medications (such as dexamethasone and proteasome inhibitors), survival has improved, although figures vary greatly per individual. For ATTR-cardiomyopathy without treatment, median survival is typically 2–4 years, but this too is highly variable. **Important:** these figures apply to large groups of patients at population level from the past; individual differences are substantial and new treatments have changed the prognosis. No one can predict how long one person will live.
Recent research (2026) is investigating how well new disease-modifying treatments (such as acoramidis for ATTR) and cardiac-supporting medications (such as SGLT2 inhibitors) can slow progression and extend survival.
Highly advanced stage: cardiac decompensation and complications
In the most severe stage, the heart can no longer pump sufficient blood, even with medication, and life-threatening complications develop.
**Common symptoms: **
- Severe shortness of breath, sometimes even at rest
- Acute pulmonary oedema (fluid in the lungs, with sudden severe shortness of breath and possibly frothy sputum)
- Shock-like state (very low blood pressure, confusion, cold extremities)
- Kidney failure due to poor circulation
- Heart rhythm disorders that are life-threatening (ventricular tachycardia or fibrillation)
- Pericardial tamponade (fluid around the heart causing compression)
- Atrial fibrillation, which carries risk of stroke
- Exhaustion and mental state may be fluctuating or confused
**What this means for daily life: **
In this stage, independent living is practically impossible. Patients are usually admitted to a hospital or follow-up care facility. Every activity (eating, toilet visits, oral care) must be done by others. Communication may be hampered by fatigue or confusion. Medical interventions (intravenous fluids, oxygen, monitoring) are virtually permanently present.
**Figures about this phase: **
Patients reaching this stage without adequate treatment have a very short median survival of weeks to a few months. With intensive supportive care and modern therapies (mechanical cardiac support, heart transplant in selected cases, targeted medications), survival can be extended. This stage, however, varies very greatly per individual; some may stabilize with aggressive treatment, others deteriorate despite all efforts. **No figures provide certainty about one person.**
Clinical warning signs and when to contact your healthcare provider
It is important to contact your cardiology provider or general practitioner quickly if you notice that you:
- Suddenly become much worse with shortness of breath, even at rest
- Faint or have prolonged dizziness
- Experience sudden severe chest or abdominal pain
- Have very irregular or very rapid heartbeat with possible loss of consciousness
- Can no longer eat or drink due to nausea
- Experience confusion or altered mental state
- Have cold feet with possible colour change
- Have blood loss (coughing up blood, very dark stools)
Such signals may indicate acute complications requiring hospital admission.
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_This information never replaces a doctor's judgment. Always discuss your situation with your own healthcare provider._