Since there are no GP surgery's in Thailand the first stop for medical advice is the nearest hospital which is where they find the doctors. So not really surprising that hospitals are busy.
Having said that , as someone else has mentioned , if one person goes the whole clan will go, uncle Tom Cobley and all. Just something different to do to relieve the boredom of normal routines.
Most common Thai phrases : ' Pai nai ? ' ....' Pai dooay '