Misunderstood and underdiagnosed for decades, autism in adults is finally receiving the attention it needs.

Thanks to the bravery of high profile figures such as Melanie Sykes, 51, and Christine McGuinness, 33, both diagnosed later on in life, the condition is becoming more understood.

According to the British Medical Association, one in 100 children in the UK have a diagnosis of autism spectrum disorder.

However, the figure is likely far more as the diagnosis process is arduous and flawed, many are likely to have been left behind.

It can take up to nine years for an adult diagnosis of autism, but in that time individuals can be left feeling lost, alone and suffer from mental issues as they struggle to cope.

Many speak of having their status confirmed as life changing, with one adult with autism speaking to the Guardian likening her diagnosis to a 'rebirth'.

Signs of autism in adults

Autism is a condition that can impact an individual's ability to communicate, concentrate, cope with certain social situations and can make some autistic people sensitive to things like bright light and loud noises.

If you haven't been diagnosed as a child, spotting signs of autism in an adult can be hard, but the NHS state the following as an indication:

  • Finding it hard to understand what others are thinking or feeling
  • Becoming very anxious about social situations
  • Finding it hard to make friends or preferring to be on your own
  • Appearing blunt or rude without wanting to be
  • Finding it hard to communicate your feelings
  • Having the same routine every day and getting very anxious if it changes
  • Having a very keen interest or obsession with certain subjects

Why is autism underdiagnosed in women?

Autism in women is underdiagnosed due to the disorder presenting itself differently in females and belief it is mainly something boys and men suffer from.

In reality, girls and women are just as likely to have the disorder.

"In schools, girls might be labelled day-dreamers or ditsy or chatterboxes but they are also much better at masking how they feel in order to respond in a socially acceptable way," says Dr Tony Lloyd.

Pressure on girls to be well organised and self-controlled limits autism and ADHD diagnoses, while boys tend to be encouraged to express themselves and present obvious symptoms, according to reports.

Underdiagnosis can lead to those adults with autism, but do not know they have it, suffering psychological issues as they don't know why they are different.

It can lead to the development of relationship problems, anxiety or panic attacks, depression, suicidal thoughts or even suicide attempts.