Hi there. Cavernous angioma is a vascular disorder of the central nervous system that may appear either suddenly or follow a autosomal dominant pattern. Your friend has epilepsy as the major symptom from it and hence is on anticonvulsants. The last change of drug is keppra, or levetiracetam, whose known side effects are pins and needles sensations in the extremities, anxiety and depression, headache and nausea. You could take vitamin B6 supplement to ease off the psychiatric symptoms. The acid reflux, coughing attacks and seizures occurring at the same time is highly dangerous, as your friend can aspirate pulmonary contents leading to a fatal complication with full stomach and semiconscious state called as pulmonary aspiration. Consult your neurologist for these and a change of drug if keppra is causing this. Take care.