Clinical Immunology focuses on the immune system’s health. Learn about the diagnosis and treatment of allergies, autoimmune diseases, and immunodeficiencies.
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Diagnosing scleroderma requires a detective’s mindset. Because the disease mimics other connective tissue disorders in its early stages, misdiagnosis is common. At Liv Hospital, we employ a rigorous, multi-modal diagnostic protocol that integrates clinical observation with advanced serological and imaging technology. The diagnosis is rarely made by a single “yes or no” test; rather, it is established by fulfilling a set of classification criteria, typically the 2013 ACR/EULAR criteria, which assigns points to various clinical features.
The immunological footprint of scleroderma is distinct. Approximately 95% of patients will test positive for Antinuclear Antibody (ANA). However, the ANA pattern and the specific antibodies present provide a roadmap for diagnosis and prognosis.
These antibodies are strongly associated with Limited Cutaneous Systemic Sclerosis (lcSSc). A positive result here suggests slower skin progression but alerts the clinician to closely monitor for Pulmonary Arterial Hypertension (PAH) in the future.
This antibody is the hallmark of Diffuse Cutaneous Systemic Sclerosis (dcSSc). Its presence correlates with a higher risk of Interstitial Lung Disease (ILD) and significant skin fibrosis. Patients with this marker require aggressive early monitoring of lung function.
This marker identifies a subset of patients at rapid risk for extensive skin thickening and, critically, Scleroderma Renal Crisis (SRC). Identifying this antibody early is vital because it changes the management plan regarding blood pressure monitoring and steroid avoidance
Nailfold capillaroscopy is a non-invasive, highly sensitive diagnostic tool that differentiates primary Raynaud’s (benign) from secondary Raynaud’s (scleroderma-associated). By placing the finger under a microscope or a dermatoscope, the doctor visualizes the capillary loops.
In healthy individuals, capillaries are uniform, hairpin-shaped loops. In scleroderma, specific abnormalities occur:
Given the high mortality associated with lung disease, pulmonary testing is comprehensive.
A standard chest X-ray is insufficient. HRCT provides detailed cross-sectional images of the lungs. Radiologists look for “ground-glass opacities” (indicating active inflammation) or “honeycombing” (indicating permanent fibrosis). This distinction determines whether immunosuppression will be adequate.
PFTs measure the mechanics of breathing. Two values are critical:
This ultrasound of the heart is the primary screening tool for Pulmonary Arterial Hypertension. It measures the velocity of the Tricuspid Regurgitation (TR) jet to estimate pressure in the pulmonary arteries. It also assesses the pericardium for fluid and the myocardium for stiffness.
In cases where myocardial fibrosis is suspected, a Cardiac MRI may be ordered. It is more sensitive than an echo in detecting inflammation and scarring within the heart muscle itself.
This procedure involves passing a camera down the throat to visualize the esophagus and stomach. It is used to diagnose Candida esophagitis, strictures, Barrett’s esophagus (precancerous changes), and GAVE.
This test measures the pressure and coordination of the esophageal muscles. In scleroderma, the classic finding is a “hypotensive lower esophageal sphincter” and “absent peristalsis” in the lower two-thirds of the esophagus, confirming the cause of swallowing difficulties.
To diagnose Small Intestinal Bacterial Overgrowth (SIBO), patients drink a sugar solution and breathe into a specialized machine. Elevated hydrogen or methane levels in the breath indicate that bacteria in the small intestine are fermenting the sugar, confirming malabsorption.
While less common now due to the reliability of antibody testing, a skin biopsy may be performed in atypical cases. A slight punch of skin is removed and examined by a pathologist. The findings of thickened collagen bundles in the reticular dermis, loss of skin appendages (hair follicles, sweat glands), and entrapment of fat cells are definitive for scleroderma. This is particularly useful for ruling out “scleroderma mimics” such as Scleromyxedema or Nephrogenic Systemic Fibrosis.
Routine blood tests for creatinine and urea are standard. However, the most critical test for predicting renal crisis is simple blood pressure monitoring. Patients are often asked to keep a home log. Urinalysis is also performed to check for proteinuria (protein in urine) or hematuria (blood in urine), which can indicate early kidney stress.
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Not necessarily. A positive ANA is seen in many autoimmune diseases and even in some healthy people. It must be interpreted alongside symptoms and specific scleroderma antibodies.
No, it is entirely painless. It is simply a microscopic view of the skin at the base of your fingernail, using oil and a lens.
Pulmonary hypertension can be silent in its early stages. An echo is the only way to screen for it before severe symptoms develop.
Typically, HRCT is done at diagnosis. If you have the diffuse subtype or markers for lung disease, it may be repeated periodically, but PFTs (breathing tests) are done more frequently (every 3-6 months).
An X-ray is a 2D image that misses fine details. HRCT produces thin-slice 3D images, allowing doctors to see lung tissue texture and detect very early scarring.
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