When Andy Gregory noticed his spunky, now 2-year-old daughter Carolina was a little lethargic and had a few red bumps on her feet, he didn't think much of it.

"At first, we just thought she had a little bug bite (or) a little rash. She had a low-grade fever. She had pretty bad diaper rash, or we thought it was diaper rash," Gregory said.

But it wasn't a bug bite and it wasn't diaper rash.

It was the virus Hand, Foot and Mouth and it was one of the worst cases her pediatrician Dr. "Sky" Izaddoost, with North Hills Family Medicine, had ever seen.

Now Carolina is all better and back to normal, but Izaddoost said in the last few weeks, she's seen an increase in the number of children coming into her clinic with Hand, Foot and Mouth.

"Usually, it's a virus that causes it and usually, it happens in the summer and fall months. Since we're getting it a little earlier this year, we're concerned because we don't know if it's going to hit us harder later in the summer," Izaddoost said.

Izaddoost said the first thing you need to do if you suspect your child has Hand, Foot and Mouth is take his or her temperature.

She said if it's 100.4 or higher, you should be concerned.