What causes spontaneous cerebrospinal fluid leaks?

See a neurologist. Possibly trauma, tumors or masses but it would be wise to seek out a neurologist or neurosurgeon.

Related Questions

How can cerebrospinal fluid leaks affect the nervous system?

May cause headaches. Most spinal fluid issues of this sort follow lumbar punctures and can be fixed via a blood patch. Far less commonly, postural orthostatic headaches can be due to spontaneous damage within the neuraxis which can cause headaches and/or dizziness.