Lot of Disease
Hellenistic · Health
The Lot of Disease is a Hellenistic Arabic Part identifying the zodiacal point most sensitive to illness, bodily weakness, and health crises in the tropical natal chart.
What it is
In Hellenistic astrology, Lots (also called Arabic Parts or Hermetic Lots) are derived zodiacal points computed from the positions of two or more planets, usually projected from the Ascendant. They sensitize a specific degree of the zodiac to a particular life domain, acting as focal points that respond to transits and progressions much as planets do.
The Lot of Disease (Greek: Kleros Nosos; Latin: Pars Infirmitatis) identifies the natal degree most attuned to illness, bodily frailty, and health challenges. Classical sources including Paulus Alexandrinus and Hephaistio of Thebes discuss this lot as one of the primary indicators of the body's weak point — not necessarily a prediction of illness, but a sensitive zone that becomes activated when the native's constitution comes under stress.
The sign and house of the Lot of Disease describe the type and domain of health sensitivity: in the 1st house, general vitality; in the 6th, chronic conditions and routine health matters; in the 8th, acute crises; in the 12th, hidden or psychosomatic conditions. The sign lord of the Lot describes the planetary nature of the health theme — a Lot of Disease in a sign ruled by Saturn may indicate skeletal, chronic, or cold conditions; in a Mars-ruled sign, inflammatory or acute conditions.
How it is calculated
The classical formula for the Lot of Disease, as given in Paulus Alexandrinus and referenced by later Hellenistic compilers, is:
Lot of Disease = Ascendant + Saturn − Mars (day birth) Lot of Disease = Ascendant + Mars − Saturn (night birth)
This sect-based reversal (day/night) follows the standard Hellenistic lot calculation convention, where day and night charts swap the planet order for many lots. The result is reduced to a zodiacal degree within 0-360° and placed in the tropical chart. The position is then evaluated by its sign, house from the Ascendant, aspects from malefics (especially Mars and Saturn, which are the lot's own components), and whether the lot's sign lord is dignified or afflicted.
What it reveals
The Lot of Disease reveals the constitutional weak point of the native's body — the zodiacal focal zone that, when activated by transits or profections, corresponds most closely to periods of illness or physical challenge. Transits of Saturn, Mars, or the Sun over the Lot of Disease are classical timing indicators for health events; Jupiter transits can indicate recovery or medical intervention that provides relief.
In Hellenistic practice, the Lot of Disease is one of several health indicators examined alongside the Lot of Fortune (general body vitality), the 6th house (chronic illness), the 8th house lord (crisis), and the overall balance of malefics in the chart. It is most meaningful when the lot's sign lord is already weakened, when malefics occupy or aspect the lot, or when the lot falls in a cadent house — conditions that compound the health sensitivity.
Frequently asked questions
Does the Lot of Disease predict specific illnesses?
No. Hellenistic lots describe sensitivity zones and themes, not specific diagnoses. The Lot of Disease identifies where and when the body is most vulnerable, and the planetary nature of its sign lord hints at the type of health challenge (cold/chronic/inflammatory/etc.), but it does not predict specific diseases and should never replace medical advice.
Why does the formula reverse for day and night births?
Hellenistic astrology uses a sect system (diurnal and nocturnal) in which the Sun, Jupiter, and Saturn are diurnal planets while the Moon, Venus, and Mars are nocturnal. Many lots reverse the planetary order for sect-opposite births to maintain the symmetry of the sect's energy. This reflects the underlying cosmological logic of Hellenistic chart interpretation.
How does the Lot of Disease differ from the 6th house?
The 6th house broadly describes chronic illness, bodily service, and health routines. The Lot of Disease is a more precise focal point indicating the body's specific constitutional vulnerability. The 6th house describes the domain of health labor; the Lot of Disease marks the natal degree most sensitive to breakdown when activated by timing techniques.
Classical sources
- Ptolemy, Tetrabiblos
- Vettius Valens, Anthology
- Dorotheus of Sidon
Related techniques
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