Some accept only FAS as a diagnosis, seeing the evidence as inconclusive with respect to other types.[1] Partial fetal alcohol syndrome (pFAS) refers to individuals with a known, or highly suspected, history of prenatal alcohol exposure who have alcohol-related physical and neurodevelopmental deficits that do not meet the full criteria for FAS.[2] The subtypes of pFAS are alcohol-related neurodevelopmental disorder (ARND) and alcohol-related birth defects (ARBD).[18] In addition to FAS, pFAS, ARND, and ARBD, any other conditions believed to be related to prenatal alcohol exposure, such as spontaneous abortion and sudden infant death syndrome (SIDS), are also considered to be on the spectrum of related disorders.[18] It is unclear as of 2017[update] if identifying a FASD-related condition benefits the individual.[9]