10. Obsessive compulsive disorder - This is also a mental disorder. And this happens most of the time when people become obsessed with themselves. It happens mostly when Moon is very powerful (due to Paksha bal, as it is just opposite the Sun) but completely alone, without aspect of any benefic or any benefic in same or in adjacent houses. Such people, might be people's people but in fact they want the limelight a lot. They become egotists. The problem becomes severe when Sun is also weak. They would like to click their own snaps and change them again and again or share with friends and they do that very often. They want to be pampered. If the Moon under aspect of a malefics, this problem becomes more severe and may lead to Obsessive compulsive personality disorder.
11. Schizophrenia - it is a mental disorder characterized by a breakdown of thought processes and by poor emotional responsiveness. The native suffers with delusions and illusions and hallucinations. All the above indicated combinations when combined with other malefic aspects and conjunctions, produce such mental disorders. Following are some of the combinations which designate natives suffering with schizophrenia:
a) Debilitated Moon (in Scorpio) in 1,5,9 house along with Ma, Saturn or Rahu/Ketu. This might get a relief if Jupiter is in center with respect with Moon and Venus gives neecha bhanga (cancelation of debilitation) to Moon, by being in houses 1,4,7,10.
b) Moon and Mercury in Scorpio in first house. Note that in such a case Moon will lack the paksha bal too (because Mercury is never more than 28 degrees away from Sun, hence Sun will be close to Moon, so Moon will have lesser Paksha bal).
c) Debilitated Moon occurs in 12th house along with Saturn.
d) Saturn in house 1, Jupiter in house 12, Mars and Moon in 1,5, 9 house.
There are many more combinations but they depend on other planets, and not just Moon, for example - Mercury when under influence of Mars, Saturn and Rahu in 12th house can give mild hallucinations. If any of the above are also true, the person will actually loose control of his brain. One more thing to notice here is that I have not listed the beneficial effects of the combinations, for example, Moon+Ketu gives awesome intuition abilities. If this combination has aspects of a benefic such as Jupiter, the native will know before what good things are about to happen. If Mars or some other malefic aspects the combinations, the native will foresee bad events.
Another thing that I want to mention is that the whole chart must be seen holistically, for example, even if a person is born on Amawasya, the moon is in better state when exalted in Taurus, specially when Ve is close by. Also, in all the above cases, if Jupiter is giving its beneficial aspects to Moon, then the person will have a very good chance of recovering from the problem. This is far better when Jupiter sits with Moon, specially in the same nakshatra. Devaguru Jupiter always comes to the rescue of Moon! Why? Because Moon is primarily sattvic and Jupiter's main duty is to promote that! Therefor always look out of Jupiter+Moon combination (conjunction, aspect, exchange, square) in one's chart, it is the best combination to have, even if both or one of them are in enemies house! This combinations always promises many things to the native, however weak it is!