how is it diagnosed?
A lumbar puncture to examine the cerebrospinal fluid and  blood tests are performed for markers of inflammation (e.g. C-reactive protein, complete blood count), as well as blood cultures.
Meningitis
Diagnosing meningitis as promptly as possible can improve outcomes. There is no specific sign or symptom that can diagnose meningitis and a lumbar puncture (spinal tap) to examine the cerebrospinal fluid is recommended for diagnosis. Lumbar puncture is contraindicated if there is a mass in the brain (tumor or abscess) or the intracranial pressure (ICP) is elevated, as it may lead to brain herniation. If someone is at risk for either a mass or raised ICP (recent head injury, a known immune system problem, localizing neurological signs, or evidence on examination of a raised ICP), a CT or MRI scan is recommended prior to the lumbar puncture. This applies in 45% of all adult cases.

If someone is suspected of having meningitis, blood tests are performed for markers of inflammation (e.g. C-reactive protein, complete blood count), as well as blood cultures. If a CT or MRI is required before LP, or if LP proves difficult, professional guidelines suggest that antibiotics should be administere
where is the brain located in a human body It is located in and protected by the skull bones of the Head what type of researches are being carried on it? Research has been ongoing to study on How the Brain works. how does it process the language? Language is processed through a wider network of the Cortical regions. how does it deal with emotions? The amygdala, orbitofrontal cortex, mid and anterior insula cortex and lateral prefrontal cortex, appeared to be involved in generating the emotions where as basal ganglia is responsible in happiness, the subcallosal cingulate cortex in sadness, and amygdala in fear. what relation does mind have with brain? Finding the relationship between the two has been a challenge due to the difficulty in explaining how mental activities, such as thoughts and emotions, can be implemented by physical structures such as neurons and synapses, or by any other type of physical mechanism. can you mention a few diseases related to it? Alzheimer's, Parkinson's and Meningitis to name a few. what does third disease refer to? It is an Acute inflammation of the Protective Membranes covering the Brain and Spinal cord. how is it caused? Typically caused by an Infection with microorganisms, viruses and bacteria among others. is there any vaccine for it? Yes. There is a Vaccine called Meningococcus who developed it? UNANSWERABLE
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Meningitis [SEP] Diagnosis
Diagnosing meningitis as promptly as possible can improve outcomes. There is no specific sign or symptom that can diagnose meningitis and a lumbar puncture (spinal tap) to examine the cerebrospinal fluid is recommended for diagnosis. Lumbar puncture is contraindicated if there is a mass in the brain (tumor or abscess) or the intracranial pressure (ICP) is elevated, as it may lead to brain herniation. If someone is at risk for either a mass or raised ICP (recent head injury, a known immune system problem, localizing neurological signs, or evidence on examination of a raised ICP), a CT or MRI scan is recommended prior to the lumbar puncture.