Hi - I've reviewed some of your recent posts, and it looks like you've been doing a lot of detoxing recently. Good for you. All the symptoms you've described (rash on arms, hip pain, etc.) are typical of healing crises, also known as cleansing reactions or Herxheimer reactions. To learn more about detox and healing crises, you might want to read "The Detox Book" by Bruce Fife, ND. http://www.drlwilson.com
and http://www.arltma.com
have good articles on these and related topics. You might want to search the Internet for other articles on these topics.
You might want to temporarily stop the lemon water until your symptoms subside. Then, you might want to do more colon cleansing and some kidney cleansing before you resume it. Lemon water causes the liver to release a lot of old toxins. This works better if you clean out your colon and kidneys first.