Migraines with visual aura.
 the patient denies headaches
(ROOT (NP (NP (NP (NNS Migraines)) (PP (IN with) (NP (JJ visual) (NN aura)))) (. .)))
(ROOT (S (NP (DT the) (NN patient)) (VP (VBZ denies) (NP (NNS headaches)))))
( ( Migraines ( with ( visual aura ) ) ) . )
( ( the patient ) ( denies headaches ) )