Annoyances going on for 5 yrs now. Have self treated as per lice infest, rat and dust mite..descript chronic. Have tried frequent rug shampooing, spraying, fumigation. Laundering w added soap, hot tumble-dry...obsessive. Good results w frequent, isolated, laundering. Regular showering. Frequent itching around waist @ beltline now. All hospital tests show negative on skin rashes, eggs etc. Symptoms of specific bite annoyance w no rashes or welts. Extreme itching of palms and soles. Problem 90prcnt controlled. IMPRESSION?