After skipping Houston's game against Toronto due to recurring migraines, Steve Francis has rejoined his team in Boston, reports Jonathan Feigen of the Houston Chronicle.  In his time off, he visited doctors is Washington, DC, to run another battery of tests on the mysterious cause of his migraines.  All his tests were negative, meaning many of the more serious possible causes have been eliminated.  But, it doesn't bring Francis a solution.

Francis' migraines began in training camp and have plagued him off and on through the season.  The migraines are more common on game days, though he's had them on off days as well.  His diet is the next thing he'll examine.  Until he can find the reason, he's likely to be in and out of the Rockets' lineup.

Meanwhile, Walt Williams is sure to be out at least five games with a sprained ankle suffered in the Toronto game.  There was no fracture, but the sprain is so bad, he can't walk without crutches.  Dan Langhi was activated in his place.