Are skin diseases generally inherited?

Skin disease. Many skin diseases such as psoriasis, eczema, acne, moles, melanoma , etc. Have a strong hereditary component. Let your dermatologist know if skin conditions or skin cancer runs in your family.
Some are inherited. An afflicted first degree relative with malignant melanoma puts you at a higher risk for developing this bad skin cancer. Always use sun block with a high spf rating.