The Board has granted service connection for mast cell activation syndrome (MCAS) as secondary to the Veteran's service-connected posttraumatic stress disorder (PTSD). The evidence is at least in equipoise that MCAS was aggravated by PTSD.
The deciding factor: The medical opinion provided by Dr. I.N., M.D. FACP, FCCP supports a connection between the service-connected PTSD and the current mast cell activation syndrome (MCAS), creating an equipoise situation which must be resolved in favor of the Veteran.
- Claimed conditions
- mast cell activation syndrome (MCAS)
- How they argued it
- Aggravation of a pre-existing condition
- Exposure basis
- None
- Rating assigned
- None in this decision
- Decision date
- October 29, 2020
- Citation
- 20070090
Veterans Law Judge
Decisions by this judge: 1,185 · Granted: 28% (granted or partly granted, in the vetted decisions on this site)
Judge attribution: 2025 complete; earlier years partial.
This is a plain-language summary generated by AI from a public Board of Veterans’ Appeals decision. It can contain errors — always verify against the original. Look up the original decision on VA.gov (opens in a new tab) using citation 20070090.
What this means for you
A grant means the Board agreed the veteran was entitled to the benefit. Decisions like this show the kind of evidence and arguments that tend to succeed for claims like it.
What you can do next
Related decisions
Other Board decisions on a similar condition or argued the same way.
- Remanded (sent back)
The Board has decided that the Veteran should be scheduled for a DRO hearing due to her request, and the appeal is being remanded accordingly.
- Remanded (sent back)
The Veteran's right shoulder disability and migraines/chronic headaches are remanded for additional development due to insufficient opinions on the etiology of her conditions.
- Granted
The Board has determined that the Veteran's lumbar spine arthritis is aggravated by his service-connected bilateral knee disabilities, and thus grants service connection for this condition.
- Granted
The Veteran's PTSD is granted as service connected due to his fear of hostile military activity during his Vietnam service.
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