I have had red spots that itch really bad. A dermatologist did a biopsy and it came back as dermatitis. Everyone looks at me and says it is bed bugs. They are not going away. I laid in the sun the other day and they itched that night and the next day. How can I get rid of them. They are on my arms, legs, stomach, back, hands, feet, chest. All over. They have white thin centers. It seems like when I pull the white out it stops itching. can you help?