hi..thanks for you query
The extremely itchy sores in the locations you mention ,might be a common disorder know as eczema.In this, there are frequent eruptions of extremely itchy papules/blisters which may/may not be seasonal.There is often a family history of allergic conditions such as asthma, hay fever
, or eczema. People with this may have atopic dermatitis
often test positive to allergy skin tests.Especially at the locations you mention ,there might be external contact allergens like the socks /shoes you wear ,which might make the flares more .YOU can do the following for this!
1)Avoid scratching the rash or skin.Relieve the itch by using a moisturizer, topical mid potent steroid
cream, or other prescribed cream and taking antihistamines to reduce severe itching
2)Keep the skin moist (called lubricating or moisturizing the skin). Use ointments
(such as petroleum jelly), creams, or lotions 2 - 3 times a day. Moisturizers should be free of alcohol, scents, dyes, fragrances, or other chemicals.
Hope this helps..take care!