[1] When considering the diagnosis of psychogenic pruritus, it is important to rule out medical, dermatologic and neuropathic causes.
One should consider drawing for a CBC (Complete Blood Count), ESR (Erythrocyte Sedimentation Rate), liver, renal and thyroid panel as abnormalities with any can contribute to pruritus.
Those who use cocaine and amphetamines may experience pruritus due to feelings of abnormal cutaneous sensations called 'delusions of parasitosis', also known as "meth mites".
They believed the term "functional itch disorder" was the best phrase to describe this condition, avoiding the use of the word "psychogenic".
[9] If the cause is found to be dermatologic in nature, dermatologists can offer solutions such as intralesional injections, wet wraps and other occlusive options.
[5] It is also common for psychologic conditions such as obsessive-compulsive disorder, depression, anxiety, bipolar and psychosis to present with pruritus.