Othello syndrome
For men the strongest trigger is sexual infidelity and with women the strongest trigger is emotional infidelity. If partner-related violence does not stop infidelity from happening, the male mate will sometimes commit suicide instead. The last thing to do to stop infidelity inside of morbid jealousy is to kill their partner. Women are much less likely to do this, unless they act in self-defense. Morbid jealousy can occur together with other conditions such as chronic alcoholism, addiction to other drugs (i.e. cocaine, amphetamines, marijuana.), organic brain disorders (i.e. Parkinson's, Huntington's), schizophrenia, neurosis, affective disturbances or personality disorders.