Can studying too much and sleeplessness lead for headache (like pressure on head) and nervousness and insomia and dizziness ? or counsult a physician

Yes, it can: Of course over-studying and under-sleeping can lead to headache, nervousness, and dizziness. Anxiety makes the sleeplessness worse, and vice versa. You also need to make sure not to use stimulants (caffeine, amphetamines, etc) because they will worsen your state. Establish regular sleep/wake times even on weekends. Exercise, even just a walk around the block. See doctor if symptoms persist.

Sure . . .: Serious sleep deprivation can contribute to many problems, including reduced ability to concentrate, traffic accidents, weight gain, increased blood pressure, reduced energy & libido and is associated with depression & cardiovascular disease. Anxiety can certainly contribute to headaches. Sounds like you are under a lot pressure. Time to rethink & rebalance your life!

Very much so: Lack of sleep can exacerbate all of the symptoms you cite. Consultation with a mental health professional can be very liberating. Talk therapy can help give you insight into your problems and give you strategies for coping. Very best of luck!

Yes: Along with lack of sleep, muscle tension and eye strain could lead to a headache. Try closing your eyes periodically while studying and relax your facial muscles.