What You See: Your child's refusal to eat, accompanied by a sandpaper-like rash
The Diagnosis: Strep throat (probably)
While strep is by no means the only possible cause of these symptoms, it's definitely worth considering once kids reach age 2 or 3 (younger children can get it but seem to be less susceptible). This pesky infection is known to cause stomachaches ranging from mild to downright severe. In fact, even a stand-alone tummy ailment without a sore throat or fever can mean strep, especially if your preschooler has been in contact with someone who's had it.
Treat It: Your doc will do a throat culture to determine if your child has strep. If the verdict is yes, he'll need antibiotics; they'll help him feel better and prevent long-term side effects. Kids aren't considered contagious 24 hours after starting antibiotics and generally feel much better within a couple of days.