it could be an allergic reaction to mozzies or fleas,i used to get spots like that when i was younger,some small,one the whole front of my calf.it eventually stopped.i was the only one affected by it.my mum and dad were fine.

Tree Tree oil just dab a little on the spot i find it great for Itchy red spots,also for bites and stings from ants and mozzies.you can also use ice

Sound like some little bugs have found their way into your house (could be fleas or dust mites..  who knows)

Start with you bed linen and thoroughly wash everything.  Vacuum the bed (the actual bed not the floor around).  Then perhaps move onto couch covers.  Then maybe even have carpets cleaned. 

I know this could get expensive (especially if it doesn't turn out to be the issue) which is why I suggest starting with your bedding.

My three year old has just had same thing hers stared before christmas with one on her face the doctor said it was a bite and said if it gets worse she could be allergic so he gave us antibiotics which we didnt use she got better then more stared coming legs,rists,ankles my six year old had bites as well but wasnt itchy in the last three days all is well we were using stinggoes cream and blowing so it drys just to take her mind of it. So eventually all spots went I put it down to mozzies and leaving the back door open when they are sleeping they may have been getting in the screen so we dont open that one now. 

Hi there!

I am from Adelaide. I had a similar type of experience once. I found out that it was it was an alergy to bites from insects called thrips. They are very common this time of year when the weather is hot. Not every one is allergic to them, so, maybe that is why your husband it not itching.

Thrips also attach themselves to washing on the line and are very attracted to light colours  They maybe on clothes,sheets and towels you have picked off of the clothes line. They also thrive in long grass or vegitation.

To get rid of them spray the house with insectercide and dry you washing indoors or in the dryer.

If thrips are the cause don't worry as soon as the cooler weather comes they will be gone.

do you have pets?

it may be flea bites, my lil man gets them as well

xoxo jade