Type 3a and 3b

[SB2015]

This might be one for you @eggyg

I keep meaning to ask this and then forgetting.
I know what Type 3c is, but what are 3a and 3b,
assuming logic applies and that these exist

 

[eggyg]

This might be one for you @eggyg

I keep meaning to ask this and then forgetting.
I know what Type 3c is, but what are 3a and 3b,
assuming logic applies and that these exist

I didn’t know there was a A and B. @mikeyB is there such a thing?

 

[mikeyB]

No, there is no such thing as Diabetes Type 3a or 3b. Logic does not apply. I think it may be a hangover from classification of pancreatic cancer. It's a classification level in many cancers and levels of dementia.

As I've said before, it is now more common than vanilla T!, though still nowhere near the level of T2 in the population. I wish more GPs knew that it is a form of T1, but even that is relatively rare as a new diagnosis.

 

[MrDaibetes]

Here is a list I found on google of different type 3's

Type 3A: genetic defect in beta cells. (this includes MODY, maternally inherited diabetes and deafness))
Type 3B: genetically related insulin resistance. (Donohue syndrome [also known as Leprechaunism])
Type 3C: diseases of and trauma to the pancreas. (eg pancreatitis, pancreatic cancer Haemochromatosis, cystic fibrosis, pancreatectomy)
Type 3D: caused by hormonal defects. (eg Cushing’s disease and syndrome )
Type 3E: caused by chemicals or drugs.(eg Glucocorticoids,β-Blockers )
Type 3F caused by infections (Congenital rubella)
Type 3G Uncommon forms of immune-mediated diabetes (‘Stiff man/ person’ syndrome)
Type 3H other (Down’s syndrome)
(type 4 is gestational)

 

[Magarnett]

All diabetes is confusing I have type2 for three years under control with metformin slow realease Sukarto. Suddenly for no apparent reason it has gone Haywire.Gp prescribed Trajenta and slowly
Th readings are coming down from the high of 23.6 . What I can’t understand is why the readings are high in the mornings. The only thing that is different is lockdown so reduced exercise. I cant
Understand that there are other definitions of diabetes than type 1 or 2

 

[mikeyB]

Here is a list I found on google of different type 3's

Type 3A: genetic defect in beta cells. (this includes MODY, maternally inherited diabetes and deafness))
Type 3B: genetically related insulin resistance. (Donohue syndrome [also known as Leprechaunism])
Type 3C: diseases of and trauma to the pancreas. (eg pancreatitis, pancreatic cancer Haemochromatosis, cystic fibrosis, pancreatectomy)
Type 3D: caused by hormonal defects. (eg Cushing’s disease and syndrome )
Type 3E: caused by chemicals or drugs.(eg Glucocorticoids,β-Blockers )
Type 3F caused by infections (Congenital rubella)
Type 3G Uncommon forms of immune-mediated diabetes (‘Stiff man/ person’ syndrome)
Type 3H other (Down’s syndrome)
(type 4 is gestational)

Just shows the senselessness of classification if you ask me. Those are nothing more than causal definitions. In practical terms, there are still only two types as far as treatment is concerned, so who cares?

NICE doesn't, for sure, apart from 3c. And at least two of those conditions that are listed are vanishingly rare, and the diabetes should be included as part the relevant syndrome. A GP would probably have to live 500 years to come across Donohue syndrome.

 

[trophywench]

@Magarnett search the Forum for 'Dawn Phenomenon' to discover why morning readings are likely to be higher than you expect. It's something that all bodies do - but unless you happen to be diabetic - you'd never have the slightest idea!