I have a rash on the tops of my hands and my inner arms only. it is a cluster of red small bumps  raised up on my hands and scattered bumps under my skin on my inner arms. very itchy  and tingly. I have had this before and it comes and goes, mostly on the tops of both hands closer to my wrists. sort of looks like poison oak or something. but it is winter time in Ohio.
Hello and welcome to Chat Doctor, I read your query and understood your concern. The rash you describe could be many things but to me, it seems like either contact dermatitis or insect bite hypersensitivity. Apply mild topical steroid like HY Chat Doctor.  Take oral anti-allergic like cetirizine / loratadine twice a day for itching and tingling. Do not scratch a lot over the lesion. Apply moisturizer over the affected area to calm the itching. Hope I helped.