Paroxysmal Extreme Pain Disorder (PEPD)

Paroxysmal extreme pain disorder (PEPD), previously called familial rectal pain, is characterized by episodes of burning pain in the rectal, ocular, and mandibular pain in association with autonomic symptoms such as skin flushing, tonic-nonepileptic seizures, bradycardia, or apnea. Symptoms are typically noted at birth and are triggered by bowel movements. Over time, the episodes of rectal pain decrease, but ocular and mandibular pain becomes more prominent and may be triggered by temperature changes, eating, or emotional stress. Many individuals with PEPD respond well to treatment with carbamazepine.

Tests Available

Forms and Documents

Test Details

SCN9A
  • Confirmation of a clinical diagnosis
  • To differentiate SCN9A-related pain disorders from other genetic or environmental causes of pain
  • Carrier testing for individuals with a known familial SCN9A mutation
  • Prenatal diagnosis in at-risk pregnancies
  • Capillary Sequencing

Ordering

650
6-7 weeks
2-5 mL Blood - Lavender Top Tube
Oral Rinse (30-40 mL)|Buccal Swabs

Billing

81479x1
No
Yes
* For price inquiries please email zebras@genedx.com

References

  1. Fertleman et al., (2006) Neuron 52;767- 774.
  2. Faber et al., (2012) Ann Neurol 71 :26-39.
  3. Goldberg et al., (2007) Clin Genet 71:311-319.
  4. Dabby R., (2012) Curr Neurol Neurosci Rep 12 :76-83.
  5. Fischer, T.Z. and Waxman, S.G., (2010) Ann NY Acad Sci 1184:196-207.
  6. Dib-Hajj et al., (2008) Adv in Genet 63:85-110.
  7. Drenth et al., (2005) J Invest Dermatol 124:1233-1238.

Forms and Documents

Test Details

AARS, ATL1, ATP7A, BSCL2, DNAJB2, DNM2, DNMT1, DYNC1H1, EGR2, FAM134B, FGD4, FIG4, GAN, GARS, GDAP1, GJB1, GLA, HINT1, HSPB1, HSPB8, IGHMBP2, IKBKAP, INF2, KIF1A, KIF5A, LITAF, LMNA, LRSAM1, MFN2, MPZ, MTMR2, NDRG1, NEFL, NGF, NTRK1, PLEKHG5, PMP22, PRPS1, PRX, RAB7A, REEP1 (C2ORF23), SBF2, SCN9A, SH3TC2, SLC12A6, SLC52A2, SPTLC1, SPTLC2, TFG, TRPV4, TTR, WNK1, YARS
  • Molecular confirmation of a clinical diagnosis
  • To assist with decisions about treatment and management of individuals with neuropathy
  • Testing of at-risk relatives for specific known mutation(s) previously identified in an affected family member
  • Prenatal diagnosis for known familial mutation(s) in at-risk pregnancies
  • Exon Array CGH
  • Next-Gen Sequencing

Ordering

737
4 weeks
2-5 mL Blood - Lavender Top Tube
Oral Rinse (30-40 mL)|Buccal Swabs

Billing

81325x1, 81404x1, 81405x4, 81406x4
Yes
Yes
* For price inquiries please email zebras@genedx.com

References

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