Skin biopsy, Allergy skin test, UV light therapy, Pulsed-dye laser therapy, Tuberous sclerosis, Melanoma, Vascular malf...ormation, Hemangioma, Skin cancer, Nonmelanoma skin cancer, Klippel-Trenaunay syndrome, Lichen planus, Vasculitis, Hair loss, Atopic dermatitis, Acne, Psoriasis, Vitiligo, Alopecia areata, Melasma, Vascular anomaly, Dermatitis, Morphea, Skin problems, Vulvar skin disorder, Breast skin change, Rosacea, Pigmentation disorder, Telogen effluvium, Telangiectasia disorder, Tinea versicolor, Oral lichen planus, Blue rubber bleb nevus syndrome, Burning mouth syndrome, Diffuse capillary malformation with overgrowth, Canker sores, Scarring alopecia, Pityriasis alba, Vascular birthmarks, Melanoma. Melanoma is a kind of skin cancer that starts in the melanocytes. Melanocytes are cells that make the pigment that gives skin its color. The pigment is called melanin. This illustration shows melanoma cells extending from the surface of the skin into the deeper skin layers., Melanoma spread: How lymph nodes play a role in detection. If you receive a diagnosis of melanoma, the next step is to determine the extent of the cancer, called the stage. To assign a stage to your melanoma, your healthcare team will: Determine the thickness. In general, the thicker the melanoma, the more serious the disease..