Scleroderma causes hardening and tightening of the skin, most often starting in the fingers, hands, feet, and face. But skin changes are only part of the picture. Depending on the type, scleroderma can also affect the digestive system, lungs, heart, and kidneys, producing a wide range of symptoms that develop over months or years.
Early Signs Most People Notice First
The earliest symptoms are often easy to dismiss. Swelling and itchiness in the fingers or hands is a common starting point, sometimes described as “puffy fingers” that feel tight or stiff. Over time, the skin in those areas becomes visibly thicker and harder, making it difficult to bend your fingers fully. This skin tightening eventually spreads, though where it goes depends on the type of scleroderma you have.
For many people, the very first clue is actually Raynaud’s phenomenon, which can appear years before any skin changes. About 95% of people with systemic scleroderma experience it. During an episode, your fingers (and sometimes toes) turn white in response to cold temperatures or emotional stress as blood vessels spasm shut. They then turn blue as oxygen runs low in the tissue, and finally flush red as blood flow returns. These episodes are painful and can last minutes to hours.
How Symptoms Differ by Type
Scleroderma comes in two main systemic forms, and the symptoms you experience depend heavily on which one you have.
Limited cutaneous scleroderma (previously called CREST syndrome) involves skin thickening only below the elbows and knees, and on the face. The trunk is spared. It tends to progress more slowly and is associated with a specific cluster of five symptoms captured by the CREST acronym:
- Calcinosis: Hard, white or yellow calcium deposits that form under the skin, often on joints, fingertips, and the face.
- Raynaud’s phenomenon: The color-changing episodes in fingers and toes described above.
- Esophageal dysfunction: Trouble swallowing and chronic acid reflux caused by weakened muscles in the esophagus.
- Sclerodactyly: Tight, thickened skin on the fingers that limits movement.
- Telangiectasias: Small, dilated blood vessels visible through the skin as red or purple dots or spider-like marks, commonly on the face and hands.
Diffuse cutaneous scleroderma is more aggressive. Skin thickening extends above the elbows and knees and can involve the chest, abdomen, and back. It carries a higher risk of serious internal organ complications, including lung scarring, kidney crisis, and inflammatory joint disease. Tendon friction rubs (a grating sensation when you move certain joints) and joint contractures, where joints become fixed in a bent position, are more common in this form.
Skin and Hand Problems
Nearly everyone with scleroderma experiences skin changes, but severity varies enormously. In mild cases, you might notice patches of tight, shiny skin. In more advanced disease, the skin can become so rigid that it restricts movement in the hands, mouth, and face. Some people find it harder to open their mouth wide enough for dental work or to make full facial expressions.
Digital ulcers are one of the most disabling skin-related symptoms. These are open sores, typically on the fingertips, caused by reduced blood flow. They’re characteristically very painful and slow to heal, and they can significantly impair hand function. Simple tasks like buttoning a shirt, gripping objects, or getting dressed become difficult. Ulcers can also develop over bony areas like the knuckles or elbows, where taut skin is more vulnerable to pressure and minor trauma.
Digestive Symptoms
The gastrointestinal tract is one of the most commonly affected organ systems. At least 40% to 50% of people with scleroderma experience esophageal symptoms like heartburn and difficulty swallowing, and when tested with objective measures, up to 90% show some degree of esophageal dysfunction.
The underlying problem is that the smooth muscle in the esophagus stops working properly. The normal wave-like contractions that push food downward weaken or disappear, and the valve at the bottom of the esophagus loosens. This combination means food moves slowly, acid washes back up easily, and the esophagus has a hard time clearing it. Over time, chronic acid exposure can lead to narrowing of the esophagus or changes in the tissue lining.
Lower in the digestive tract, some people develop bloating, constipation, diarrhea, or episodes of both. When the intestinal muscles are affected, food passes too slowly, which can lead to bacterial overgrowth and malabsorption of nutrients.
Lung Involvement
Lung complications are among the most serious aspects of scleroderma and a leading cause of disease-related death. Two distinct problems can develop.
Interstitial lung disease, or scarring of the lung tissue, is more common and more severe in diffuse scleroderma. The hallmark symptoms are shortness of breath that worsens with physical activity and a persistent dry cough. Fatigue and chest discomfort often accompany these. Because the scarring develops gradually, you might not notice breathing problems until significant lung function has already been lost.
Pulmonary arterial hypertension, or high blood pressure in the blood vessels of the lungs, is more frequently seen in limited scleroderma. It affects 30% to 50% of people with systemic scleroderma overall. Early on, the only sign may be getting winded more easily during exercise. As it progresses, you might notice swelling in the ankles, chest pain, or lightheadedness.
Kidney Complications
Scleroderma renal crisis occurs in roughly 10% of people with systemic scleroderma, predominantly those with the diffuse type. It involves a sudden, dangerous spike in blood pressure that can damage the kidneys rapidly. Warning signs include new or worsening headaches, blurred vision, and decreased urine output. This is a medical emergency, and outcomes are significantly better when it’s caught and treated early.
Joint Pain, Muscle Weakness, and Fatigue
Pain, stiffness, and achiness are everyday realities for most people with scleroderma. Joint pain is common even without visible swelling, and many people also experience muscle pain and weakness, particularly in the upper arms and thighs. In diffuse disease, large-joint inflammatory arthritis can develop alongside tendon problems that create friction or limit range of motion.
Fatigue is one of the most pervasive and underestimated symptoms. It goes beyond normal tiredness. Many people describe it as a deep, unrelenting exhaustion that doesn’t improve with rest. It can be driven by the disease process itself, by pain that disrupts sleep, by lung involvement reducing oxygen delivery, or by poor nutrient absorption from gastrointestinal problems. The cumulative effect on daily functioning is significant, even in people whose disease appears mild by other measures.
How Scleroderma Is Diagnosed
Because symptoms overlap with many other conditions, diagnosis can take time. The formal classification system used by rheumatologists assigns weighted points based on specific findings. Skin thickening that extends past the knuckles on both hands is the single most definitive sign: it alone meets the threshold for classification. When that finding isn’t present, doctors look at a combination of puffy fingers, fingertip ulcers or pitting scars, telangiectasias, abnormal capillaries visible at the base of the fingernails, Raynaud’s phenomenon, lung involvement, and specific blood antibodies. A total score of 9 or more points confirms the diagnosis.
Doctors also assess how far skin changes have spread by pressing on 17 specific body areas and rating the thickness on a scale. This helps distinguish limited from diffuse disease and provides a baseline to track whether the condition is progressing or stabilizing over time.