<s>[INST] My son has suddenly started to have red dry patches which are round-in- shape on his chest and shoulders.There are only a few, however they are unusual to his normal body/skin area.  We swim, wear sun screen, etc... Can  anyone tell me if we should take him to a doctor for an evaluation? About 2 (again only about 4-5) are round in circular form and rashish; there is no puss or discharge. Could this be ring worm? [/INST] Hi, thanks for posting your query. Your son has developed round red Chat Doctor.  This can be due to a number of conditions. You have not mentioned his age and whether it is associated with itching, which could have helped in narrowing down the possibilities. How every one the following conditions may be the present:Contact dermatitis, urticaria, psoriasis, acne, satyriasis rose, insect bite reaction, fungal infection(ring worm) etc. You should surely take him to doctor for evaluation and appropriate timely treatment. Hope this solves your query. Wish your son a speedy recovery. Take care </s>