Need to talk to a dermatologist
Lichen Simplex Chronicus
Hello and welcome to ask a doctor service. I have read your query, viewed the images and here is my advice.
I can see a dry, scaly patch of thickened skin which is darker than the surrounding normal skin. It is Lichen Simplex Chronicus (LSC) or Neurodermatitis - thickened skin which perpetuates the desire to itch, itching in turn causing the skin to become thick /lichenified. So, it basically becomes a itch- scratch - itch cycle. I suggest you to use a moisturizer, frequently. Over that I suggest you to use a potent topical steroid e.g either clobetasol propionate 0.05% or Betamethasone Dipropionate 0.05%, twice daily for 3-4 weeks. In addition I suggest you to take an oral antihistamine e.g cetrizine 10mg tablet once a day for symptomatic relief from itching.
Hope I have answered your query. Let me know if you need any more assistance.
I remember this starting as a slight tickle when i was meditating one day
I know here is no obvious cause for this but are there any postulations ?
Regarding Lichen simplex Chronicus
Pathophysiology of LSC is unknown, though, stress/ emotional disturbance often lies at the root of the problem on many cases. It is more common in patients who are atopic.
Let me know if you need any more assistance