<s>[INST] i have recently noticed petechiae covering my abdomen , chest , breasts and upper arms. i havent really noticed anything else odd, except for some slight weight gain . im a 45 yr old f female who smokes and i have a rather physically demanding job. i also have allergies, which i ve never seen a physician for, but seem to be dust and pollen related. i dont know whether that would contribute to the petechiae or not. thank you for your time. [/INST] Hi, Thanks for posting your query. Dust/ pollen by allergy doesn't cause petechiae on skin. It may cause difficulty in breathing/ large erythematous rash called as "urticaria". You should consult with dermatologist. Your petechiae may or may not be related with dust/ pollen This may be entirely different disease. Thanks, Dr. Mayank Bhargava </s>