# Symptoms and stages of systemic sclerosis
Systemic sclerosis progresses very individually. There is no universal 'sequence of steps' that everyone follows: some begin with skin thickening on the fingers, others with digestive problems or lung complaints. Nevertheless, there are many common patterns described here.
Early stage (first 1-3 years)
In the earliest stage, many people notice Raynaud's phenomenon — a reaction in which fingers turn white, blue or red in response to cold or stress. This can exist for months or years before other symptoms occur. Some people have this phenomenon alone for a long time, while others develop additional complaints quickly.
**Skin changes** usually begin on the fingers and spread outward. The skin feels thick, stiff and shiny. This makes fine movements more difficult — undoing buttons, writing or eating with cutlery can become harder. Swelling can occur, especially in the hands and feet.
**Joint pain** occurs frequently, especially in the wrists, fingers and knees. Sometimes this feels stiff, similar to rheumatoid arthritis, although signs of inflammation are often less pronounced. Stiffness is usually worst in the morning.
**Digestive problems** can appear early: heartburn, difficulty swallowing or a full feeling after small amounts of food. The esophagus stiffens due to tissue fibrosis, making it harder for food to pass through.
**Fatigue** is a common complaint, often disproportionate to the effort a person expends.
**Finger and facial swelling** can lead to a mask-like face with tighter facial expression and narrower mouth opening, which can complicate dental care.
In this stage, median survival since diagnosis is approximately 10+ years in large European and American populations (data from registry studies 2015-2023), but this says nothing about an individual. Many people with early stage live decades with stable or slowly progressive symptoms.
Early diffuse stage (years 1-5 after diagnosis)
In some, skin changes spread more rapidly to the arms, face, chest and back. The skin becomes thinner and fragile, so even small wounds heal slowly. Underlying muscles can shrink (atrophy), causing facial wasting and weakness.
**Lung involvement** becomes clearer. Interstitial lung disease (scarring of lung tissue) causes shortness of breath on exertion, a dry cough and lower oxygen levels. This is one of the most limiting symptoms: climbing stairs, shopping or doing housework becomes harder. In some cases this worsens rapidly, in others it remains stable.
**Pulmonary hypertension** (elevated blood pressure in the lung vessels) can develop and leads to dizziness, cyanosis and fatigue. This can severely strain the body.
**Heart involvement** occurs in a minority, but can be serious: arrhythmias, thickening of heart walls or inflammation. This causes shortness of breath, chest pain or palpitations.
**Kidney involvement** can escalate rapidly in what is called scleroderma renal crisis — sudden blood pressure elevation with possible kidney failure. This is a medical emergency. In earlier decades without treatment this could be severe within weeks; with modern treatment much better controllable.
**Digestive problems intensify**: vomiting, constipation and diarrhea alternate. The intestines can develop local blood loss (ischemia) due to narrowing of blood vessels, causing pain and bowel obstruction.
**Mouth opening** decreases further, making eating and dental care even more limited.
Patients in this stage have median survival since diagnosis of 10-15 years in large cohorts (registry studies 2010-2022), again with large individual differences. Lung disease and kidney involvement are the most important prognostic factors.
Late diffuse to stable stage (year 3-10+)
After a few years, the skin stabilizes in many people: it becomes thinner, hard and contracted, but does not deteriorate continuously. Contractures increase — loss of flexibility in fingers, wrists, elbows and shoulders — making everyday tasks increasingly difficult. Simple things like washing hair, getting dressed or personal hygiene may require assistance.
**Reduced lung function** remains progressive in approximately 30-40% of patients; others stabilize. Chronic shortness of breath significantly limits activities. A small subgroup develops lung cancer (increased risk).
**Kidney function** may slowly decline, without acute crisis. Regular monitoring is important.
**Digestion and nutrition problems** become chronic. Malabsorption may develop — the body absorbs vitamins, fats and proteins poorly. Weight loss is frequent. Some require tube feeding.
**Skin ulcerations** and necrotic areas may develop at pressure points (fingers, feet); these heal with difficulty and may pose infection or amputation risks.
**Calcinosis** — calcium deposits in skin and underlying tissue — causes pain and may give rise to swelling and infections.
**Sjögren-like symptoms** increase: dry eyes, dry mouth, swelling of salivary glands.
In the late stage, prognosis is more complex: patients may live 5, 10, 15 or more years, depending on organ involvement. Lung disease and kidney involvement dominate the prognosis. People without significant lung or kidney involvement usually have a considerably better life expectancy.
Late/terminal phase (when present)
Not everyone reaches this phase. When progressive lung disease, pulmonary hypertension or heart failure advance considerably, physical reserve decreases. Shortness of breath becomes continuous, even at rest. Transport, self-care and social participation are severely limited. Food intake and insomnia may become problematic.
This phase may last years or progress more rapidly. Medical care focuses on symptom relief and quality of life.
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When to contact your doctor?
Contact your doctor or emergency care is needed for:
- **Sudden rise in blood pressure** (especially with headache or blurred vision)
- **Severe shortness of breath** that suddenly worsens
- **Chest pain or heart palpitations**
- **Severe abdominal pain** with vomiting or no bowel movement
- **Fever or signs of infection** (especially with ulcerations or calcinosis)
- **Severe difficulty swallowing** with vomiting
- **Wave of fatigue** with confusion
Regular contact for monitoring lung function, blood pressure, kidney function and nutrition also remains important, even when symptoms feel stable.
_This information never replaces a doctor's judgment. Always discuss your situation with your own healthcare provider._