 [ Symptoms ] can head lice cause bumps bruising andor pain in the area where they feed  i had a small case of head lice that i quickly treated with rid shampoo and then the gel comes in the box with the tiny comb when i woke up the next morning after the nits and lice were removed my head was hurting on the sides of my head where a few of them had been i felt around the area w here there was pain and felt a small bump there both sides i did not hit my head on anything to cause this [ Disease ] probably the most important thing to do is to not wear your hair in a tight ponytail or elastic band while you sleep the tension on the hair may result in hair breakage during the night also if you have a tendency to pull or twirl your hair while you sleep which you may not be aware of you may benefit from wearing a silk or cotton bonnet or cap similar to a shower cap just be sure the elastic is not too tight around your forehead and hairline