Squamous Cell Carcinoma Symptoms: Signs to Watch For

Cutaneous squamous cell carcinoma (cSCC) typically arises on sun-exposed skin. Early recognition improves outcomes. Key signs include:

Common Presentations

• Firm, erythematous or skin-colored nodule that grows rapidly over weeks.
• Persistent, scaly, crusted, or wart-like plaque that may bleed easily.
• Non-healing ulcer or sore (>4 weeks) with raised, indurated edges.
• Lesion that changes in color, size, shape, or elevation.
• Tender, painful, or pruritic lesion (though many are asymptomatic).
• Horn-like projection (cutaneous horn) overlying a hyperkeratotic base.

High-Risk Features (Require Urgent Evaluation)

• Diameter >2 cm
• Depth >2 mm (Breslow) or invasion beyond subcutaneous fat
• Perineural invasion (clinical: numbness, paresthesia, weakness)
• Poorly differentiated histology
• Location on ear, lip, scalp, temple, genitalia, or in a scar/chronic wound
• Immunosuppressed patient

Actinic Keratosis (Precursor)

Rough, sandpaper-like scaly patches on sun-damaged skin; may progress to cSCC. Field treatment (topicals, PDT) reduces risk.

Any suspicious lesion—especially a non-healing sore or changing growth—should be evaluated by a dermatologist promptly. Biopsy confirms diagnosis.