Sick Headache, Lemon Good for

"One lemon before breakfast will help to keep off sick headache. Have never found a remedy to cure sick headaches. A sack of hot salt will always help the pain." The lemon will help to tone up the stomach and the salt applied to the head will help the pain by relieving the congestion. It is always well to take a good cathartic after a spell of sick headache.

Source: Mother's Remedies: Over One Thousand Tried and Tested Remidies from Mothers of the United States and Canada, T. J. Ritter