Rahu in the 8th house draws you toward mystery, transformation, and hidden knowledge. This placement often produces an intense, secretive individual with a strong intuitive streak, and the overall balance of ease and difficulty depends on Rahu's strength and aspects in your chart.
Benefic Effects
Health
A strong, well-maintained physique is likely, along with a reserved nature that keeps your true feelings hidden from others. Leadership qualities and strong intuitive power round out this profile.
Business and Job
A technical field could suit your career, and work in intelligence or as a spy or detective is possible. Managerial roles and starting your own business are other likely paths.
Financial
Sudden monetary gains are likely, along with a possible inheritance of money and property from your parents.
Educational
You are likely to be a meritorious student.
Social
A fondness for foreign travel is likely, along with attraction to wise, knowledgeable people and a wish for an equally intelligent marital partner. The courage to think unconventionally, a knack for innovation, a pull toward spirituality, and the possibility of settling abroad round out this profile.
Love and Married Life
Devotion to your marital partner is likely.
Malefic Effects
Health
Masochistic tendencies are possible at times, along with heavy spending on legal matters. A pull toward the paranormal, stress, anxiety, chronic illness, and stomach or kidney problems are additional risks, and a newborn child may face some health challenges.
Business and Job
A short temper could damage your professional reputation.
Financial
A materialistic approach is possible, along with dependence on close ones for financial help, unethical earning methods, being cheated in investment plans, false insurance claims, and occasional extravagance.
Educational
You may claim creative skills you don't genuinely possess.
Social
A mischievous attitude toward situations is possible, along with legal trouble stemming from poor decisions and involvement in underworld activity. An afflicted Rahu here can bring frequent trouble, hostility due to high social status, unnecessary arguments, public humiliation, a strained relationship with parents, a pull toward occult solutions, deception for personal gain, a reckless lifestyle, conflict with household staff, physical injury, separation from loved ones, family tension, impatience in critical moments, and risk of harm from animals.
Love and Married Life
The affliction may harm your married life, and adulterous tendencies or post-marital tension are possible.
Conclusion
You are likely to be a naturally secretive person with the depth of mind to solve real mysteries, possibly drawn to detective or intelligence work over the course of your career. Research work and, at times, legal trouble are both possible, along with several casual relationships, a troubled married life, and some dissatisfaction with your children's actions.