BGIF is, as usual, correct. The only times/instances wherein it takes a sharp diagnostician to separate a severely schizophrenic person from a severely depressed person are where you have VERY extreme cases of both. In the severe depression case the depression is so bad that the patient is just nearly comatose with inactivity.
In the severe schizophrenia case, the patient is so bombarded with excess stimuli that they curl up within themselves to "hide" from the bombardment [mimicking certain forms of autism]. Both patients may exhibit outwardly the same "no involvement" with the outside world to the casual observer while being inflicted, paradoxically, with the exact opposite problems [too little "energy/nerve system excitement" vs way too much].
This used to result in severe "psychotic depression" patients, who were in reality over-bombarded schizophrenics, being given medicines intended to boost brain neurotransmitter functions when that was exactly what they didn't need. So, the depressed end of the symptoms is where confusion might occur, not at the "euphoric/hyper" end as BGIF points out.
This guy is behaving like one of two things: a brain-neurotransmitter-imbalanced schizophrenic who is in serious trouble [and BGIF is again correct that brain trauma might bring this anomaly on], or a drug-induced pseudo-schizophrenic, whereupon this guy needs to dry out permanently.
Truck-driver "amphetamine psychosis" is nearly impossible to distinguish from "regular" schizophrenia, for instance. Any so-called "uppers" or powerful neurotransmitter stimulating drugs can produce this in the susceptible brain [I had a friend whose first adventure with cocaine, and his last, put him out in a strange neighborhood threatening citizens with a knife, and thereby on to Jackson prison for a three year term.] What the individual brain can take is unknowable until the [stupid] experiment is run.
Given that, this athlete may be lying to cover up excess drug use.
