How many injections do I need?

It depends on the diagnosis. Some patients respond with 1–2 blocks; others require a series of 3 with intervals of 2–4 weeks.

Interventional procedure

Sympathetic Nerve Block

For neuropathic and sympathetically maintained pain · Fluoroscopy-guided

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The procedure

What is the sympathetic nerve block?

The sympathetic nerve block is an interventional technique that interrupts sympathetic nervous system activity in a specific region of the body. It is used when pain is mediated or maintained by the sympathetic system, which occurs in conditions such as complex regional pain syndrome (CRPS), ischemic pain, and certain chronic neuralgias. The injection is performed with fluoroscopic guidance for maximum precision.

Indications

For which conditions?

Complex regional pain syndrome (CRPS type I and II)
Upper limb neuropathic pain (stellate ganglion block)
Lower limb neuropathic pain (lumbar sympathetic block)
Ischemic pain from peripheral vascular disease
Severe refractory hyperhidrosis
Chronic pelvic pain (hypogastric plexus block)

The process

How is the sympathetic block performed?

Under fluoroscopic guidance, the needle is advanced to the sympathetic chain (stellate ganglion for the upper limb, or lumbar sympathetic chain for the lower limb and pelvis). Position is confirmed with contrast medium and the therapeutic agent is injected. The procedure takes 20–30 minutes, is outpatient, and the patient goes home the same day.

Advantages

Why choose this treatment

Precise diagnosis

Confirms the exact origin of pain with high certainty

Fast relief

Pain reduction from the first hours

Image-guided

Fluoroscopy or ultrasound for maximum precision

Outpatient

No hospitalization, the patient goes home the same day

Could this procedure help you?

In the first consultation we evaluate if you are a candidate and design the appropriate plan for your case.

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Frequently asked questions

Most frequently asked questions

How many sessions are needed?

A diagnostic-therapeutic series of 1 to 3 sessions is generally performed. If there is a positive response, it can be complemented with sympathetic radiofrequency to prolong the effect.

Is the relief permanent?

The block treats active inflammation. If pain returns, it can be combined with radiofrequency for a more lasting result.

Are there side effects?

They are minimal when performed with image guidance. There may be temporary numbness in the treated area.

Do I need to rest?

24 hours of moderate activity is recommended. Most patients resume their activities the next day.