Bartonella definately produces emotional herxes in my daughter. Anger, lashing out, raging, frustration, loss of executive function; where before the change in treatment or increase in abx dosage there was happiness, laughter, patience and organization.
I, myself, have had a skin herx with cat's claw. A symptom I had never had before - my skin became very sensitive to touch, as though I had been flicked with a rubber band whenever I was touched with any pressure. The sensation would last for 30 seconds or so and then fade. I also developed very sore elbow joints with cat's claw as well. This was all before I thought to take Japanese knotweed at the same time.