Pillar article
Rahu Dosha and Ketu Dosha Are the Axis, House by House
Rahu dosha and Ketu dosha, in consulting speech, mean the nodes afflicting the lagna, the Moon, or a house the native fears, not two independent planets that can be removed separately. Rahu's mahadasha is eighteen years. Ketu's is seven. Because they are always opposite, a dosha story about Rahu's house is automatically a story about Ketu's opposite house. A remedy that claims to clear one node and leave the other untouched has misunderstood the axis.

Two labels, one line
Rahu in the 1st puts appetite and visibility on the self, and Ketu in the 7th puts detachment on marriage. People call the first Rahu dosha and the second a marriage problem, then buy two remedies. It is one axis. Rahu in the 9th and Ketu in the 3rd is the dharma-and-courage line, often swept into pitra language on Rahu's end. Rahu with the Moon is the mind's version, agitation, and Ketu with the Moon is the severing version, a mind that drops its objects. Exaltation conventions put Rahu strong in Vrishabha and Ketu strong in Vrishchika in the common student list, which means one end dignified implies the other end in the opposite dignity's sign. Read both ends before you name a dosha.
Remedies that respect the years
Durga for Rahu and Ganesha for Ketu are the usual devotional pairings, not a technology for deletion. Rahu's eighteen years and Ketu's seven will elapse. Antardashas inside them are the product of the years divided by 120. Charity, regularity, and a clear reading of the occupied houses are the conducts that match the nodes. Hessonite and cat's eye appear in popular gem lists for Rahu and Ketu. They are not prescribed here, because a stone for a node that is actually helping the 11th can amplify the wrong thing, and because no medical claim belongs on a gem. If the Moon is afflicted and the native is suffering, a clinician outranks a gem.
Information before the upay
Information worth having is the house, the sign, the conjunction with the Moon or Jupiter or Saturn, and the dasha. Jyothish SI provides the houses from the birth time using Lahiri ayanamsa. Kaal Sarpa is a further test, all seven grahas on one side, and it is not identical to Rahu dosha. A lone Rahu in the 10th can be a career amplifier with no serpent yoga at all. Call that a 10th-house Rahu. Save the word dosha for a real affliction of the lagna or the Moon, and even then name the opposite Ketu in the same breath.
Frequently asked questions
Why can't Rahu dosha be cleared alone?
Ketu is always opposite Rahu. The houses are a pair. Remedies do not move either point. Rahu's period is eighteen years and Ketu's is seven.
What is the difference between Rahu dosha and Kaal Sarpa?
Rahu dosha is loose speech for an afflicted node. Kaal Sarpa requires all seven grahas on one side of the axis. A Rahu in the 10th can exist without that condition.
Which deities are traditionally paired with the nodes?
Durga with Rahu and Ganesha with Ketu, as devotion. The pairing does not change the houses or the dasha arithmetic.
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D1, D9, D10, dashas, yogas, and transits, the same calculations referenced in this article.
