Ok I suffer from bad mental health and anxiety issues and I struggle with day to day tasks ect.. anyways I applied for pip and got a letter saying they need more information from my go, does this mean I won't need a face to face interview? I get really anxious when going out and seeing new people ect.. (I know I'm strange) wished I want like this.. I'm on medication but always needing the dose put up ect.. is this a normal letter?