I don't have head lice but around the front of my hair line it feels like bugs are always crawling there. What could be the cause?

Irritation? There coukd e sensitive nerves which cause disconfort. After evaluation if the skin looks normal and there are no underlying medical problems such as diabetes or thyroid issues, intralesional steroids Lidocaine may give you relief.
Several things... The most common would be "dandruff" or seborrheic dermatitis. Second could be psoriasis, third could be an allergic reaction to something you're applying to your skin. Sounds like you need to see a dermatologist to help you identify the cause.