“52. The appellant has enlisted the assistance of a psychiatrist expert, whose report concludes that the appellant suffers from PTSD. I have no reason to doubt that the appellant does suffer from that condition, which is supported by other medical evidence in the bundle. However, what is unexplained is if this condition developed, as is claimed by the expert, due to the appellant’s experiences in Nigeria (referred to above) then why it is that she only sought assistance after she claimed asylum in June 2016. If the severity of her condition is as it is described, then she would have needed medical intervention earlier. Yet, she appears to have chosen only to turn to medical attention after she claimed asylum. 53. Whilst I have taken into account the medical opinion and have sought to give weigh to the findings, the conclusion to which I have come is, in light of the totality of the evidence, that I reject that she developed this condition as a result of the experience as described by her in Nigeria.”