There are a few different reasons that the testicles may itch. Probably the most common is simply irritation of the skin from moisture and chafing from clothing. This is very common especially if you have been exercising regularly or otherwise sweating, but it can occur at any time.
Common Side Effects of Lidocaine. 1  High blood pressure. 2  Swelling or swelling or redness of the skin at the site of injection if receiving lidocaine via injection into the veins. 3  Constipation, nausea, and/or vomiting. 4  Confusion, dizziness, headache, funny feeling or tingling in the toes, fingers, or hands.
Various studies have reviewed the effect of lidocaine to blunt these responses. It is agreed that lidocaine blunts cough reflexes and dysrhythmias. Some studies note a response of lidocaine in blunting rises in pulse, blood pressure, intracranial and intraocular pressure.