Description: Skin cancer is an abnormal growth of skin cells, typically caused by exposure to ultraviolet (UV) radiation from the sun or tanning beds. It can arise from different types of skin cells and is classified into various forms, including basal cell carcinoma (BCC), squamous cell carcinoma (SCC), and melanoma. 

Types: 

Basal Cell Carcinoma (BCC): The most common type, often appearing as a shiny bump or pinkish patch. 

Squamous Cell Carcinoma (SCC): Develops in the squamous cells, presenting as a firm, red nodule or scaly lesion. 

Melanoma: The most dangerous form, originating from pigment-producing cells (melanocytes), and often resembling moles. 

Signs and Symptoms: 

New or unusual growths or sores that do not heal. 

Changes in the size, shape, color, or texture of existing moles or skin lesions. 

Itching, tenderness, or pain in the affected area. 

Diagnosis: 

Clinical examination of the skin by a healthcare provider. 

Skin biopsy: Removal of a tissue sample for laboratory analysis. 

Imaging tests (e.g., ultrasound, MRI) to evaluate extent if advanced. 

Treatment Options: : 

Surgical excision (e.g., Mohs surgery) to remove cancerous tissue. 

Radiation therapy to target and destroy cancer cells. 

Chemotherapy or immunotherapy for advanced cases. 

Targeted therapy (e.g., BRAF inhibitors) for specific types like melanoma.