Thank you. Ok. Your history and pictures are very strongly suggestive of scabies.
The best way to treat scabies is with permethrin cream. You can get permethrin 5% lotion over the counter. However everyone in the house needs to apply the cream head down to the toes, twice, a week apart, as per instructions in this website below.
In addition, to help with the itch, I would recommend the following:
1. Calamine lotion applied 3-4 times a day
2. Cortisone cream applied twice a day
3. Benadryl tablets 6hrly as required, to stop the itch.
This is nothing serious and should clear up with treatment.
Hope this helps. Do keep me posted & get back if you have any further questions or feel that I have missed out anything. I will be here to provide ongoing advice as necessary. Please do not hesitate to ask. Best wishes.