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Materia Medica Viva Volume 6 – page 1337

Chronic hydrocephalus may also be an indication of Calcarea.
Head sweats are very characteristic, in both children and adults. There is copious nocturnal sweating of the head in children, wetting the entire pillow. The sweat may roll down the face in large, bead-like drops. The perspiration tends to smell sour.
Calcarea produces copious exhausting sweat, particularly at back of the head and nape of the neck, even in cold air. You would naturally think that a person going into a cold room would stop his sweating, but sometimes the Calcarea patient will break out in a sweat, upon the head, and upon the feet, in a cold room’ (Kent).
There is perspiration of the head in the evening.
On the scalp, there is a biting, burning and crawling itching, which spreads from the back part of the head, and becomes worse in the evening from being warm in bed. Scratching the head creates lumps and a bloody eruption on the head, which forms turns into scales.
Eruptions on the scalp are frequently seen; eczema; tinea favosa, thick scabs covered with thick pus. Crusta serpiginosa and herpes circinatus during dentition. Crusts on the head in nursing children.
The hair is dry and looks like flax, with much dandruff, yellowish-white scales, on the scalp. It tends to fall out easily, sometimes leaving bald patches.
An interesting symptom that is emphasised by Hering is an impatient scratching of head on awakening or when roused from sleep; it was observed e.g. in cases where the chief complaint was coxalgia or paralysis.
Eyes
The eye symptoms are generally aggravated by straining them during reading, writing, or by looking steadily at one thing, and also by bodily exertion. Bright sunlight also worsens eye conditions, and if the patients catch a cold from exposure of the feet to water, from exposure to wind or from cold, damp weather, this easily settles in the eyes and causes eye troubles. Ophthalmia appears: in new-borns, as a result of taking cold, from a foreign body entering the eye. The lids are red, swollen, painful and itching. Comeitis and conjunctivitis.