A former cabinet minister in the Welsh Assembly Government has announced she has cancer affecting the bone marrow.
Clwyd South Labour AM Karen Sinclair, aged 55, said she had been in pain for some time, and it was "something of a relief" to be diagnosed with myeloma.
She said the diagnosis was serious but she was confident she could be in remission quickly and hoped to get back to "my old self very soon".
Wrexham-born and a mother of two, she lives in Llangollen with her husband.
She was first elected as an AM when the assembly began sitting in 1999, and served in Rhodri Morgan's cabinet after being given the business portfolio in 2003.
Previously, she spent 14 years with the Youth Service and worked for Wrexham's social services, helping people with learning disabilities.
Mrs Sinclair encouraged constituents to contact her colleagues in her office if they needed help, adding: "No one needs to worry that their cases might not be seen to properly".
She also advised people to seek medical advice if they were concerned about their own symptoms.
She said: "This diagnosis is serious but it also comes as something of a relief.
"For some time now my ability to move has been very restricted, and anything but the smallest movement has been slow and painful.
"My GP, the consultant and all the staff at the hospital have been marvellous at getting to the root cause of it and now we know what the problem is, we can get on with treating it.
"I am confident that with the right treatment it can be put into full remission quite quickly and I am looking forward to being right back to my old self very soon."
She added: "I am very lucky to have my family around me as well as lots of friends and well-wishers to help me through what will obviously be a difficult time.
"People may not see me around so much for a while, but I'm not going to be idle - and I'm looking forward to being fighting fit very soon."