Conversation: The conversation between human and AI assistant.
[|Human|] I noticed a small red rash on my upper arm 2 days ago. It itched off and on alittle the first day then the next day I noticed a wierd tingling. Now its tingling off and on constantly throughout the day. It almost feels like a small crawling sensation.
[|AI|]  HI, They can be the cause of many problems, one of the most common being an allergic reaction; this could be almost anything and often proves impossible to find the cause. Triggers could be anything from something you have eaten to something simple like the material of maybe a new item of clothing. Also, some soaps or detergents can cause rashes, so think about if you have used a new product or even a new fragrance. Antihistamine tablets can be purchased over the counter and these will help with the itching. If you prefer not to take medication then you can purchase lotions or creams that will also help with the itching and redness. You will still need to see your doctor, especially if the rash does not go away, gets worse or starts to spread. Hope this will help you.