The common conditions treated by a general dermatologist are Acne, Rashes, Rosacea, Seborrheic dermatitis, Skin cancer, Vitiligo, Wrinkles, Actinic keratosis, Alopecia areata, Atopic dermatitis, Basal cell carcinoma, Bullous pemphigoid, Cellulitis, Contact dermatitis, Dermatomyositis, Hair loss, Impetigo, Keloids, Melanoma, Psoriasis, and Molluscum contagiosum.