g tea with lemon juice is sometimes
of service. To actually lessen the pain _one_ of the following may be
tried: phenacetin (eight grains) and repeat once in an hour if
necessary until three doses are taken by an adult; or, migraine
tablets, two in number, and do not repeat; or fluid extract of
cannabis indica, two drops every half hour until relieved, or until
six doses are taken.

=HEADACHE FROM VARIOUS CAUSES.=--It is impossible to decide from the
location or nature of the pain alone to what variety of headache it
belongs, that is, as to its cause. It is only by considering the
general condition of the body that such a decision can be attained.

=Headache from Indigestion.=--The pain is more often in the forehead,
but may be in the top or back of the head. The headache may last for
hours, or "off and on" for days. Dull headache is seen in
"biliousness" when the whites of the eyes are slightly tinged with
yellow and the tongue coated and yellowish, and perhaps dizziness,
disturbances of sight and a feeling of depression are present. Among
other signs of headache due to indigestion are: discomfort in the
stomach and bowels, constipation, nausea and vomiting, belching of
wind, hiccough, and tender or painful eyeballs.

In a general way, treatment for this sort of headache consists in the
use of a cathartic, such as calomel (three-fifths of a grain) at
night, followed by a Seidlitz powder or a tablespoonful of Epsom salts
in a glass of cold water in the morning. A simple diet, as very small
meals of milk, bread, toast, crackers with cereals, soups, and perhaps
a little steak, chop, or fresh fish for a few days, may be sufficient
to complete the cure.

=Sympathetic Headaches.=--These are caused by irritation in various
parts of the body, which is conveyed through the nervous system to the
brain producing headache. Headache from eye-strain is one of this
class, and probably the most common, and, therefore, most important of
all headaches. There is unfortunately no sure sign by which we can
tell eye-headaches from others, except examination of the eyes (see p.
29). Redness, twitching, and soreness of the eyelids, and watering of
the eyes, together with headache, after their excessive use may
suggest the cause in some cases. The pain may be occasioned or almost
constant, and either about the eyes, forehead, top or back of the
head, and often takes the form of "sick headache." The headache may at
times appear to have n