Pemphigoid is a group of uncommon and rare autoimmune blistering skin diseases. As its name indicates, pemphigoid is similar to pemphigus,<ref>Template:DorlandsDict</ref> but unlike pemphigus, pemphigoid does not feature acantholysis.<ref>|%20}} Pemphigoid at the US National Library of Medicine Medical Subject Headings (MeSH)</ref>
Pemphigoid is less common than pemphigus, and is slightly more common in women than in men. It is also more common in people over 60 years of age than it is in younger people.
There are three types:
- Gestational pemphigoid or Pemphigoid gestationis (PG) (formerly called Herpes gestationis)
- Bullous pemphigoid (BP)
- Mucous membrane pemphigoid, also known as Cicatricial pemphigoid (CP)
They are considered connective tissue autoimmune skin diseases. Bullous and Cicatricial pemphigoids usually affect persons who are above age 60.<ref>Cicatricial Pemphigoid at eMedicine</ref><ref>Bullous Pemphigoid at eMedicine </ref> Gestational pemphigoid occurs during pregnancy,<ref>Pemphigoid Gestationis at eMedicine</ref> typically in the second or third trimester, and/or immediately following pregnancy.