Possible spider bites on 2 year old

My son woke up this morning with several strange spots on his face and on the back of his neck that look like insect bites - they look like small whiteheads. They don't appear to be bothering him or itch but they look awful. When I dropped him off at day care they said it almost looked like chickenpox but he hasn't been exposed and has had the vaccine. We moved into this house a few weeks ago and I'm noticing several small spiders (not brown recluse), also some tiny black ants around the windows. Is there another type of spider that would bite him? Thanks for any help.

[Dr_Aparna]

Hi,
Most spider bites are harmless, causing redness and swelling at the site but no serious risk, so you can probably relax. The only spiders that pose a real danger are black widow and brown recluse spiders.
If you suspect that your child has been bitten by a brown recluse or black widow spider or stung by a scorpion, call your doctor or take your child to the nearest emergency room. Otherwise, you can safely treat the wound at home.
Wash the site thoroughly with soap and water, and apply an ice pack or ice cube to reduce any swelling and redness.
If it hurts, give your child acetaminophen or ibuprofen as needed. The swelling and redness should go away in a day or two.
Over the next few days watch your child for any symptoms that might call for a doctor's attention.
If the wound turns into a blister or begins to look purple and infected, call your physician. He or she may decide to prescribe an antibiotic.
ref:http://www.myonlinewellness.com/topic/topic13683