Keep with the liver flushes. This is very important and what ultimately maintains your health. Digestion needs to be superb and this goes hand in hand with a clean liver.
My symptoms mimic yours. I have crawling sensations around my scalp as well. Humaworm improved my health ten-fold but it's still a battle. I'm doing Liver Flushes and coffee enemas, which have helped tremendously. I also eat pineapples and pumpkin seeds daily and drink distilled water.
Keep at it. Get the terrain clean so that it's inhospitable to parasites. You may want to look into a juice cleanse or something of that sort but I'd make sure your liver is clean enough to handle the toxin release from that. You'll get there.