Dermatitis is a skin disorder characterized by inflammation and irritation of the skin. It can happen due to genetics, a highly active immune system, allergies, various irritants, and many more factors. It is a skin condition that is normally harmless to the body. It is not contagious, and symptoms usually vary from mild to severe depending on the cause. Anyone, young or old, can catch dermatitis, and several factors enhance the risk of getting the disease. Signs and symptoms of dermatitis There are various types of dermatitis, and the symptoms largely depend on the type of disorder. For example, a person might have one type of dermatitis or many. Each dermatitis type shows one or sometimes multiple symptoms. They include itching, red rash, dry skin, blisters filled with fluid, ulcers, and thick, hard, and swollen skin. Most patients with dermatitis will experience itching as the first symptom. Many patients complain of itching as one of the worst things about dermatitis, as it sometimes becomes persistent and does not go away quickly. Dermatitis flares primarily get triggered by an itch–scratch cycle, where the itching causes scratching, which leads to the discharge of inflammatory mediators, resulting in dermatitis and dry skin. Causes of dermatitis itch Itching is one of the most complicated symptoms of dermatitis.