This topicis one of the misunderstood concepts in Indian society as well as in astrology. A learned Astrologer will first examine your horoscope thoroughly and conclude whether Pitridosha is forming in the kundali or not. Generally, depending upon the symptoms, like massive poverty, chronic illness, continuous wealth loss, fluctuating income, instability in jobs etc., some Astrologers declare Pitridosha and emphasize unsuitable remedial measures.
However, many of above-said symptoms might be due to dasha of afflicted or bad planets or due to irritating transits. So, one should go to a competent Astrologer only to ascertain the real position. If one is suffering from Pitridosha, Nivaran puja is required else one could go for PitriKalyan Puja for enrichment and happiness of ancestors so that they could always bless you with prosperity.First of all Pitra Dosh is not a Curse of Ancestors for sure. It is well defined by the definition as it is a Karmic Debt of the ancestors which a person is having Pitra Dosh in his horoscope is supposed to pay. In simple language Pitra Dosh is formed in the horoscope of a person due to bad karmas or bad deeds done by Ancestors of that person and the native has supposed to pay that karmic debt by suffering the punishment or by the good deeds done by the person having Pitra Dosh in his horoscope.So Pitra Dosh does not mean that the ancestors are cursing the person having Pitra Dosh in his horoscope but it means that the Ancestors of such person are themselves cursed.