=Diseases of the Maternal Organs.=--These in women produce headache, particularly pain in the back of the head. If local symptoms are also present, as backache (low down), leucorrhea, painful monthly periods, and irregular or excessive flowing, or trouble in urinating, then the cause of the headache is probably some disorder which can be cured at the hands of a skillful specialist in women's diseases. =Nervous Headaches.=--These occur in brain exhaustion and anaemia, and in nervous exhaustion. There is a feeling of pressure or weight at the back of the head or neck, rather than real pain. This is often relieved by lying down. Headache from anaemia is often associated with pallor of the face and lips, shortness of the breath, weakness, and palpitation of the heart. Rest, abundance of sleep, change of scene, out-of-door life, nourishing food, milk, cream, butter, eggs, meat, and iron are useful in aiding a return to health (see Nervous Exhaustion, Vol. III, p. 17). =Neuralgic Headaches.=--The pain is usually of a shooting character, and the scalp is often exceedingly tender to pressure. They may be caused by exposure to cold, or by decayed teeth, or sometimes by inflammation of the middle ear (see Earache, p. 40). =Headache from Poisoning.=--Persons addicted to the excessive use of tea, coffee, alcohol, and tobacco are often subject to headache from poisoning of the system by these substances. In tea, coffee, and tobacco poisoning there is also palpitation of the heart in many cases; that is, the patient is conscious of his heart beating, irregularly and violently (see Palpitation, Vol. III, p. 171), which causes alarm and distress. Cessation of the habit and sodium bromide, twenty grains three times daily, dissolved in water, administered for not more than three days, may relieve the headache and other trouble. Many drugs occasion headache, as quinine, salicylates, nitroglycerin, and some forms of iron. The poisons formed in the blood by germs in acute diseases are among the most common sources of headache. In these disorders there is always fever and often backache, and general soreness in the muscles. One of the most prominent symptoms in typhoid fever is constant headache with fever increasing toward night, and also higher each night than it was the night before. The headache and fever, together often with occasional nosebleed and general feeling of weariness, may continue for a week or two before the patient feels sick enough to go to bed. The existence of headache with fever (as shown by the thermometer) should always warn one of the necessity of consulting a physician. Headache owing to germ poisons is also one of the most distressing accompaniments of _grippe_, measles, and smallpox, and sometimes of pneumonia.