Skin diseases are conditions that affect the skin, hair, and nails. They can range from mild to severe and can be caused by a variety of factors, including:

• Infections: Bacterial, fungal, and viral infections can all cause skin diseases.
• Allergies: Allergic reactions to substances like pollen, dust, or certain foods can lead to skin problems.
• Autoimmune diseases: Conditions where the body’s immune system attacks its own tissues can affect the skin.
• Genetic factors: Some skin diseases are inherited.
• Environmental factors: Exposure to sunlight, chemicals, or irritants can damage the skin.
  Common skin diseases include:
• Eczema: A chronic skin condition that causes dry, itchy, and inflamed patches.
• Psoriasis: A chronic autoimmune condition that causes thick, scaly patches.
• Acne: A common skin condition that causes pimples.

Treatment for skin diseases varies depending on the underlying cause. It may involve medications, topical creams, lifestyle changes.