What Causes Abdominal Pain Along With Severe Tiredness?

What induces repeating episodes of randomly experiencing EXTREMELY_INTENSLY_VIVID_PHYSICAL_SENSATIONS: sudden onset intensely vivid physical sensations of bodily energies gathering from entire system into central torso, condensing and compacting into transition-transmutation as if cycling-states-of-matter begin 'a vivid pooling sensation accompanied with intensifying weighted heaviness energy-liquification sensation, always followed by wierd vivid almost dysi-disorienting sensation, of 'loseing operationally integral physical-operations-fuel, similar to draining vehicle-fluid tanks-pan of all contents; then massive extreme-exhaustion follows?