Mercury gets debilitated when it is placed in the sign of Pisces, which means Mercury becomes very weak by virtue of its placement in the sign of Pisces. Accordingly debilitated Mercury in the tenth house of a horoscope may not produce significant positive or negative results for the native, unless it is supported by the other positive or negative planets in his horoscope. The type of results given by such debilitated Mercury whether they are positive or negative; depend on the working nature of Mercury and on the overall tone of the horoscope in question.
Benefic retrograde debilitated Mercury in the tenth house of a horoscope in the sign of Pisces can bless the native with good results related to marriage, profession, fame, authority and many other types of good results depending on the overall tone of his horoscope. Such benefic retrograde debilitated Mercury can bring many types of positive results to some natives under its impact through their marriages, when supported by marriage favoring planets in their horoscopes. Benefic retrograde debilitated Mercury in the tenth house in the sign of Pisces can get some natives married to people who may hold posts of authority in the house of government or in private organizations and these natives may benefit through such marriages. For example, if benefic retrograde debilitated Mercury is placed in the tenth house of a horoscope in the sign of Pisces, benefic Venus is placed in the eighth house of this horoscope in the sign of Capricorn and benefic Jupiter is placed in the third house of this horoscope in the sign of Leo along with benefic Moon, the native may witness such marriage. The native boosted by benefic retrograde debilitated Mercury in the tenth house in the sign of Pisces and other benefic planets may get married to a woman who may be an officer in a department of government or she may hold a post of authority in a private organization.
When joined by profession building planets in the horoscopes of the natives boosted by it, such benefic retrograde debilitated Mercury holds the potential to bless these natives with success through many fields of profession. Benefic retrograde debilitated Mercury in the tenth house in the sign of Pisces can make some natives interested in the field of science due to which these natives may engage in professions falling under this field and they may achieve success as IT professionals, doctors, architects, scientific researchers, astronomers and other such professionals. For example, if benefic retrograde debilitated Mercury is placed in the tenth house of a horoscope in the sign of Pisces, benefic Sun is also placed in the tenth house of this horoscope, benefic Venus is placed in the ninth house of this horoscope in the sign of Aquarius, benefic Moon is placed in the third house of this horoscope in the sign of Leo and benefic Jupiter is placed in the fourth house of this horoscope in the sign of Virgo, the native may become an architect. The native boosted by benefic retrograde debilitated Mercury in the tenth house in the sign of Pisces and other benefic planets may take a course in architecture and he may become a professional architect after that. The joint impact of such benefic retrograde debilitated Mercury and other benefic planets can bless this native with good amount of money and success through this field of profession.
At the same time, if benefic Saturn is placed in the second house of this horoscope in the sign of Cancer and benefic Mars is placed in the twelfth house of this horoscope in the sign of Taurus when all other planets are placed in the already mentioned houses of this horoscope, the results may become much better. The native boosted by benefic retrograde debilitated Mercury in the tenth house in the sign of Pisces and other benefic planets may become a very successful architect and he may witness very good amount of financial incomes as well as recognition through this field of profession. Apart from this, benefic retrograde debilitated Mercury in the tenth house in the sign of Pisces can bless the natives with many other types of good results through many other professional fields, depending on the type of positive planets which support it in the horoscopes of these natives.
On the other hand, malefic retrograde debilitated Mercury in the tenth house of a horoscope in the sign of Pisces can trouble the native with problems related to marriage, profession, health and many other types of problems depending on the overall tone of his horoscope. Some natives may feel the heat of such malefic retrograde debilitated Mercury in the sphere of their health due to which they may have to face many types of problems related to this sphere. Malefic retrograde debilitated Mercury in the tenth house in the sign of Pisces can render many types of health problems to some natives and these problems may convert into serious diseases with the addition of other negative planets to the horoscopes of these natives. In an extreme case of this type when supported by other malefic planets, malefic retrograde debilitated Mercury in the tenth house of a horoscope in the sign of Pisces can afflict the native with a fatal disease which may trouble him a lot and which may claim his life at a relatively young age.