<s>[INST] Hello doctor, I am inquiring about a small group of rashes that appeared about a week ago and have not changed much. They are small clusters of raised bumps that are slightly itchy. It aches with movement and aggravated when touched. Please help. [/INST] Hi. I saw your picture (attachment removed to protect patient identity). There are few papulovesicles (few are solid bumps, few blisters as per the picture) arranged in groups, with erythema (redness) at the base involving the right side of the chest. Features are consistent with herpes zoster, more of abortive variety because you are saying it is not progressing and staying same since a week. Herpes zoster is also called shingles. It is the reactivation of virus varicella, which causes chickenpox usually in children. It starts with pain, burning sensation involving one half of the body limiting to one dermatome (body is divided into different dermatome). Later, there will be painful blisters in groups in a linear fashion. It has to be treated with antiviral medicine (Acyclovir or Valacyclovir) as early as possible. Other possibilities are: Please fill in this information to rule out these possibilities and confirm the diagnosis. Do you have similar red bumps on the right side of back? Please check your upper back, armpits, and arm. Any history of physical stress, illness, surgery, any crash diet, vigorous exercise (outdoor play/activity) or injury in the recent past? Are you using any oral medication or any recent history of travel? Revert with more information to a dermatologist online --> </s>