Not many people realise that our health can be tracked in the stars! Each of the planets and the signs have particular areas of the body that they influence through their rulership.
For example, Aries rules the head, brain and eyes, so people with the sign Aries prominent in their charts are subject to head injury, headaches, general problems with organs in the head and fevers (although the nose is ruled by Scorpio). Aries is such a headstrong sign.
One of the great things about Medical Astrology is that it can enable us to work around the timing of diseases, or accidental injuries, or other health problems and to estimate the duration of any illness. This is very useful, as well as being reassuring to sufferers.
Health issues are largely governed by the sixth house and its planetary ruler, along with the ascendant and its planetary ruler in a nativity (personal birth chart). The situation of the Sun and Moon are also significant, as are the placement of Saturn (chronic conditions) and Mars (acute conditions).