With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Tony Blair won a local election.
text_B: Trichodynia is a condition where a person experiences a painful sensation on their scalp .. scalp. scalp. The pain sometimes is described as burning .. Often there is an underlying psychosomatic cause , such as stress , depression or anxiety .. psychosomatic. Psychoneuroimmunology. Only a few studies have been conducted on this condition .. A theory behind the condition is that nerves innervating scalp hair follicles send pain messages back to the brain when the follicle no longer has a hair in it , in a similar way to phantom limb pain .. scalp. scalp. phantom limb. phantom limb. Another theory is that people who have this condition -LRB- sometimes called `` ponytail syndrome '' -RRB- have super-sensitive nerves in their scalp .. scalp. scalp. A possible treatment is to halt hair loss in the patient , however it is important to understand and address any underlying psychologic comorbity .
not_related.