Nervous system
Absence seizures
Non-infectious · Chronic
Brief episodes of blank staring caused by sudden bursts of abnormal brain activity, most common in children.
GeoMed · Nervous system conditions
Nervous system conditions
The brain, spinal cord and nerves, which control and coordinate the body.
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Nervous system conditions
Nervous system
Nervous system
African trypanosomiasis (sleeping sickness)
Infectious · Chronic
A parasitic infection spread by tsetse flies in sub-Saharan Africa, which can invade the brain and is fatal without treatment.
Nervous system
Alcohol withdrawal
Non-infectious · Acute
Symptoms that occur when someone who is physically dependent on alcohol suddenly stops or cuts down, ranging from shakiness to life-threatening seizures and delirium.
Nervous system
Alzheimer's disease
Non-infectious · Chronic
The most common cause of dementia, a progressive brain disease that gradually affects memory, thinking and daily abilities.
Nervous system
Amyotrophic lateral sclerosis
Non-infectious · Chronic
A progressive disease of the nerves that control muscles, causing increasing weakness, difficulty speaking, swallowing and breathing.
Nervous system
Anisocoria (unequal pupils)
Non-infectious · Acute or chronic
A difference in the size of the pupils, which can be harmless or a sign of a problem with the nerves that control the eye.
Nervous system
Attention deficit hyperactivity disorder (ADHD)
Non-infectious · Chronic
A neurodevelopmental condition causing ongoing difficulties with attention, hyperactivity and impulsivity that affect daily life.
Nervous system
Autism spectrum disorder
Non-infectious · Chronic
A lifelong neurodevelopmental difference affecting social communication and interaction, with focused interests and repetitive behaviours.
Nervous system
Autonomic neuropathy
Non-infectious · Chronic
Damage to the nerves that control automatic body functions such as blood pressure, heart rate, digestion, bladder and sweating.
Nervous system
Bacterial meningitis
Infectious · Acute
A serious infection of the membranes surrounding the brain and spinal cord, which needs emergency treatment.
Nervous system
Bell's palsy
Non-infectious · Acute
Sudden weakness or paralysis of the muscles on one side of the face, caused by inflammation of the facial nerve.
Nervous system
Benign essential blepharospasm
Non-infectious · Chronic
A neurological condition causing involuntary, repeated blinking and forceful closing of the eyelids.
Nervous system
Benign paroxysmal positional vertigo
Non-infectious · Acute or chronic
Brief spells of spinning dizziness triggered by changes in head position, caused by loose crystals in the inner ear.
Cardiovascular system
Beriberi
Non-infectious · Acute or chronic
A condition caused by severe lack of vitamin B1 (thiamine), affecting the heart, nerves or brain.
Nervous system
Nervous system
