Chondrodermatitis nodularis helicis
Winkler disease, also called chondrodermatitis nodularis chronica helicis (CNH), is a benign but intensely painful inflammatory and necrotic lesion of the outer ear. Unlike ordinary growths, CNH is fundamentally a reaction to ischemic necrosis caused by poor microcirculation, which sets off transepidermal elimination of damaged cartilage and degenerated collagen.
Unique Anatomy and Microvascular Ischemia
- A delicate structure: The rim of the ear (helix) and the inner ridge (antihelix) have very little subcutaneous tissue and no protective fat padding, so the skin is bound tightly to the cartilage lining (perichondrium).
- End-artery blood supply: The perichondrium is the only source of nourishment for the cartilage beneath it. Constant mechanical pressure (sleeping on one side, rubbing from headphones, holding a phone against the ear), combined with cold-induced vasoconstriction or sun-related degeneration of the dermis, causes the small perichondrial vessels to collapse and block.
- Cartilage necrosis and transepidermal elimination: Prolonged ischemia leads to small foci of necrosis in the underlying cartilage. The dead cartilage and collagen behave like an internal foreign body: the epidermis thickens around them, becomes spongy, and forms a channel to push the necrotic material out through transepidermal elimination.
Sensory Nerves and the Source of the Stabbing Pain
The perichondrium is densely supplied with sensory fibers from the great auricular nerve and the auriculotemporal nerve. When the cartilage dies and the inflamed perichondrium contracts, these nerve endings are squeezed hard, producing sudden, sharp pain with even light pressure.
Because we understand that Winkler disease stems from microvascular ischemia and focal cartilage necrosis—not from a simple overgrowth of cells—Haute-Derma has developed an evidence-based, conservative pressure-relief approach. We use high-frequency ultrasound to examine the perichondrium, then remove the necrotic cartilage precisely with cartilage-sparing microsurgery or a superpulsed CO2 laser. PDRN micro-injections and Vbeam Perfecta laser treatment close off inflamed vessels and stimulate healthy blood flow, so patients get rapid relief from the stabbing pain while the risk of cosmetic deformity of the ear is kept to a minimum.
Histopathology and Dermoscopic Diagnostic Criteria
Characteristic Microscopic Findings
Under the microscope, CNH clearly shows the picture of a necrotic lesion expelling foreign material:
- Central crater / keratin plug: The center of the lesion is an epidermal defect filled with fibrin, necrotic cells, and a parakeratotic plug.
- Hyperplastic epidermal shoulders: On either side of the crater, the epidermis is thickened (acanthosis) and raised, wrapping around the necrotic zone.
- Cartilage and perichondrial changes: The perichondrium is infiltrated by chronic inflammatory cells (lymphocytes, plasma cells). The cartilage loses its chondrocyte nuclei, stains abnormally basophilic or eosinophilic, and fragments and breaks down in patches.
- Transepidermal elimination (TEE): Dense, deeply eosinophilic bands of degenerated collagen can be seen passing through an epidermal channel to the surface.
Dermoscopic Criteria
Digital dermoscopy at Haute-Derma helps detect the specific signs of Winkler disease:
- Volcano-like pattern: A yellow-white scale or keratin plug sits in the center, surrounded by a raised orange-red rim.
- Radial vascular pattern: Dotted vessels and short dilated vessel segments radiate around the base of the plug like the spokes of a wheel.
- Collarette of scale: Slight peeling of the stratum corneum at the edge of the crater forms a round white ring around the center of the lesion.
Clinical Features and Differential Diagnosis
Clinical Features
- Characteristic pain: Even light pressure causes sharp, intense pain, so patients often cannot sleep on the affected side.
- Appearance: A single small papule (3–10 mm), round or oval and well defined, with a firmly attached central crust.
- Location by sex:
- Men: Usually on the outer rim (helix), linked to sun exposure and sleeping position.
- Women: Usually on the inner ridge (antihelix), from friction with headphones, eyeglass frames, or mobile phones.
Clinical and Histologic Differential Diagnosis
| Winkler disease (CNH) | Squamous cell carcinoma (SCC) | Basal cell carcinoma (BCC) |
|---|---|---|
| Sharp, intense pain on touch | Usually painless or mildly tender | Painless |
| Small necrotic keratin plug | Large ulcer or cauliflower-like growth | Depressed, bleeding center with a pearly border |
| Volcano pattern, radial vessels | Glomerular vessels, large keratin masses | Arborizing vessels, leaf-like areas |
| Focal necrosis of the perichondrium | Extensive invasion and destruction of cartilage | Little cartilage invasion in early stages |
| Entirely benign | Malignant, invasive, can metastasize | Locally malignant |
Pressure-Relief and Microcirculation Repair Protocol at Haute-Derma
At Haute-Derma, we avoid wide excisions that deform the ear and electrocautery that can spread cartilage damage. Instead, we use a minimally invasive microsurgical pressure-relief approach:
High-Frequency Ultrasound Mapping of Necrotic Cartilage
High-frequency skin ultrasound (20–50 MHz) scanned directly over the ear lets the dermatologist measure the depth of the necrotic pit, the extent of damaged perichondrium, and the size of the dead cartilage to be removed.
Cartilage-Sparing Microsurgery / Superpulsed Laser Ablation
- Minimal-access micro-excision: A very fine incision is placed along a natural fold of the ear, and the thin skin is gently lifted off the perichondrium.
- Removal of necrotic cartilage (micro-shaving): An Er:YAG 2940 nm laser or microsurgical instruments shave away just enough of the sharp, necrotic cartilage that presses on the nerves and causes pain. The surrounding healthy cartilage framework is preserved as fully as possible.
Microcirculation Repair and Pressure-Relief Advice
- Vbeam Perfecta 595 nm laser: Closes inflamed, tight capillaries and reduces swelling and pain right after the procedure.
- Regenerative biotherapy: Micro-injections of stem-cell exosomes plus salmon-DNA PDRN around the perichondrium encourage new capillary growth and restore tissue perfusion.
- Ear-relief pillow (donut pillow): Patients are shown how to sleep on a special pillow with a central hole that takes mechanical pressure off the ear.
