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Table 5 The frequency of side effects

From: Lidocaine injection of pericranial myofascial trigger points in the treatment of frequent episodic tension-type headache

Side Effects

Group 1

Group 2

Group 3

Group 4

Pain at injection area

1

1

1

1

Dizziness

1

0

1

1

Servical muscle spasm

1

0

0

1