1 Lice are transmitted through direct contact with an infested person or his personal objects regardless ofâ¦. 2  Scalp Lice: What They are and How to Deal With Them Scalp lice are rapidly becoming a major problem in the United States.
Skin disease causes of ear itching. Ear itching can also be caused by skin diseases that affect other parts of the body. These include: Eczema (skin rash usually caused by allergic reactions). Neurodermatitis (skin condition, the cause of which is not known, characterized by intense itching).
Painful lumps behind ear causes include: 1  Abscess â These are lumps that develop when tissue or cells become infected. 2  Dermatitis â This takes place when waxy dead skin cells or dry skin builds up and is joined by inflammation and redness. 3  Mastoiditis â The mastoid bone is found behind the ear and can get infected.