Which one different between Psoriasis Impetigo Contact dermatitis Basal cell carcinoma?

Psoriasis is a chronic autoimmune skin condition characterized by red, scaly patches, while impetigo is a bacterial skin infection that leads to red sores, typically around the nose and mouth. Contact dermatitis is an inflammatory reaction resulting from skin exposure to irritants or allergens, causing redness and itching. Basal cell carcinoma is a type of skin cancer that arises from basal cells and often appears as a persistent, non-healing sore or a waxy bump.