<s>[INST] Hi, I have an indentation in my skull on the right side of my head.  I get severe pain in it but only lasts a few seconds/minutes.  I am beginning to worry about it a little because I also have developed spasticity in the bicep of my right arm which is causing excrutiating pain to the point of tears. I have been prescribed baclofen to relax the muscle in my arm but please can you tell me what this indentation is? [/INST] Hi,Indentation in skull means depression(opposite of elevation) in skull.It can produce headache if it involves underneath brain parenchyma.R) sided brain controls L) half of the body ,hence R) side headache (indentation)  produce left half symptoms instead of right.Consult neurologist for clinical examination and further management.Hope this will help you </s>