What Is The Cause And Treatment For Pain In Scalp?

Hi doctor...i m suffering from a problem of sclep pain/hair roots pain.
pain is in my complete head but at right side at few part pain is more ehen i jst even touch my skull from there...

mybhairs r long....but from last 6 months...there is huge problem of hairfall....hairs getting dry famage nd weak..nd less in amount.
m trying every oil shampoo but no effect...

Is pain in scalp normal?
What should i do
plz guide me.the right way

1 more thing...after putting any oil..or doing a minnor head massage...pain in scalp increased
plz give me.detail answer m sooo much worried about my hair loss snd scalp pain