· Spinal surgery
· Myelographic dyes (Oil-based dyes such as Myodil (Pantopaque) and Water-based dyes such as Iopamidol)
· Epidural steroid injections (Such as Depo-Medrol, Depo-Medrone)
· Epidural anaesthesia
· Multiple lumbar punctures
· Blood Patches used to stop CSF leaks.
· Trauma
· Viral, Fungal and Bacterial Infections (Such as Meningitis, Tuberculosis, HIV)
· Subarachnoid haemorrhage
· Spinal Stenosis
· Chronic disc prolapsed
** Although multiple lumbar punctures can cause and irritate Arachnoiditis, sometimes they are necessary to find out and treat some Viral/Fungal and Bacterial causes of Arachnoiditis **