I just found this on the back of my neck today. I feel rough and a little painful. Is this psoriasis?

Hello, according to your description, this does not rule out the possibility of skin allergy. Generally speaking, sensitive skin is a highly intolerant skin state, which is easily stimulated by various factors to produce multifactorial syndrome, resulting in subjective symptoms such as tingling, burning, tightness and itching. The skin looks normal or accompanied by mild desquamation, erythema and dryness.

Guiding opinions:

It is suggested that you can go to the pharmacy to buy chlorpheniramine for oral use and calamine lotion for external use.