<s>[INST] I have a hard lump behind my right ear for past 4-5 months, its on the bone, wasnt sensitive to touch, now it is.  I also notice two have grown behind my left ear, on bone area, very sensitive to touch.  Headaches. tired.  Not sure if this is related but I have noticed a change in my hair where I had normal and now doesnt matter how many times I wash it, its oily and sticky on just top of my head.  Is this related?  What do I do? [/INST] Hi, DEAR,Good Evening, Thanks for the query. I studied it in details and understood your health concerns regarding it. Lump caused on the back of left and right ear is due to the- Seborrhea dermatitis with Scalp Infection leading to Boil and the regional lymphadenitisa. Treatement is by -a-Surgical Chat Doctor. Hope this would help you to plan the treatment with your doctor. Wellcome for any further query in this regard. Wishing you good health. Good Night. </s>