Dr. Hulda Clark wrote in The Cure For All Diseases (p192) - Psoriasis and Eczema are both caused by Ascaris. Their molting chemicals are quite allergenic; perhaps it is these that are affecting the skin. Since pets pick up these worms daily there is a chronic reinfection in families with pets.
She advised using parasite herbs and the Zapper.
Ascaris ova can live for many years in house dust, rugs and the soil around houses or gardens so besides treating other household members and pets you may need to take out carpets and replace with washable area rugs.