My child has pandas. Should he have his tonsils removed?

Uncertain. The nih does not recommend tonsillectomy for treatment of pandas; there is no clear evidence from clinical trials that it helps. On the other hand, there are many, many reports on sites like pandas foundation that tonsillectomy was the cure for their children. In my practice, I have seen some remarkable improvements following tonsillectomy, but again, these are "anecdotal". Ask your doc.
PANDAS tonsillectomy. If recurrent strep throat has been part of the problem or anti-streptolysis antibody levels are high, yes, tonsillecotmy is often performed.