(Concern) I'm worried about hair loss ㅠㅠ

Every time I wash my hair... I lose a handful of hair,ㅠㅠ

I really dislike washing my hair.

Sometimes, my scalp itches.

Is this a symptom of hair loss??

If I reduce the number of times I wash my hair, will my hair fall out more?

Is this enough to consider medication treatment?

Please give me some advice!