Autoimmune polyendocrine syndrome type 2
|Autoimmune polyendocrine syndrome type 2|
|Classification and external resources|
Autoimmune polyendocrine syndrome type 2, a form of autoimmune polyendocrine syndrome also known as Schmidt's syndrome, or APS-II, is the most common form of the polyglandular failure syndromes. It is more heterogeneous and has not been linked to one gene. Rather, patients are at a higher risk when they carry a particular human leukocyte antigen genotype (DQ2, DQ8 and DRB1*0404). APS-II affects women to a greater degree than men (75% of cases occur in women).
Features of this syndrome are:
- Addison's disease
- Primary hypothyroidism
- Graves' disease
- Pernicious anaemia
- Primary hypogonadism (less common)
- Diabetes mellitus (type 1)
- Vitiligo (less common)
- Coeliac disease
- Myasthenia gravis
Symptoms of Addison's disease and Hashimoto's thyroiditis include:
- Dry hair
- Abdominal Pain
- Frequent urination
- Weight and muscle loss
- Salt cravings / salt wasting
- Anorexia and cachexia
- High pulse / weakened heart
- Low blood pressure
- Numbness in extremities
- Migraines / dysparunia
- Poor immune system response
Some researchers favour splitting this syndrome into three distinct syndromes (numbering 2, 3 and 4), but research evidence for these distinct combinations is not convincing.
It is named for Hermann Adolf Alexander Schmidt (1831 – 1894), an Estonian / Baltic-German Physiologist.
- Heuss D, Engelhardt A, Göbel H, Neundörfer B (June 1995). "Myopathological findings in interstitial myositis in type II polyendocrine autoimmune syndrome (Schmidt's syndrome)". Neurol. Res. 17 (3): 233–7. PMID 7643982.
- Greenspan, Francis S.; Gardner, David C. (2004). Basic clinical endocrinology. New York: McGraw-Hill. p. 103. ISBN 0-07-140297-7.
- Betterle C, Zanchetta R (April 2003). "Update on autoimmune polyendocrine syndromes (APS)". Acta Biomed 74 (1): 9–33. PMID 12817789.
- de Carmo Silva R, Kater CE, Dib SA, et al (February 2000). "Autoantibodies against recombinant human steroidogenic enzymes 21-hydroxylase, side-chain cleavage and 17alpha-hydroxylase in Addison's disease and autoimmune polyendocrine syndrome type III". Eur. J. Endocrinol. 142 (2): 187–94. doi:10.1530/eje.0.1420187. PMID 10664529. Retrieved 2008-07-25.