Conversation: The conversation between human and AI assistant.
[|Human|] My 16 mt old grandchild is exhibiting a fiery red rash on trunk and back of neck with some raised welt like lesions that are very transiet. He doesn t seem to be feeling very well - possibly a low grade fever. Question an allergy bur concerned because of West Nile season etc
[|AI|]  Hello, I appreciate your concern. What you are describing seems to be a form of allergy, called urticaria lesions which are raised and welt-like. A viral infection (in view of the fever) is the most likely cause. Others could be an allergic reaction to a new food or piece of clothing/bedding (as it is confined only to the shirt area) The rash with West Nile virus will be smaller spots and bumps, which appear after the fever settles, so you need not be concerned.  I would suggest an anti-histamine to help with the rash and itching, it is important that you measure the temperature and give paracetamol if temp crosses 100 F. Hope he feels better soon!