Help with a rash on the back of my neck and between my breasts

[adashofblessings]

I have had this issue for several years now (10+). This problem started on the back of my neck. At first I thought it was from dying my hair. My sister mentioned it, and thought it was just dirty. I have had a lot of people say something that I was not properly bathing. Which is very embarrassing and knowing I wash daily. I scrub those areas now almost obsessively. Even taking loufas and pumice stones to get rid of them. Which has not worked. I tried baby powder, lotion. I went to my family doctor and they prescribed Ketoconazole 2% Shampoo that I am supposed to apply to the affected area for 5 minutes then wash off. It is a 4 fl. oz. bottle. From what they said it was a type of yeast/fungal rash. I do not get it. I am not out in the sun constantly, my skin tone is fair, I have lt. brown hair, and no other rashes in any other areas. I took a picture of the back of my neck (only part of the neck effected), between my breasts and a picture showing under my breasts where I would expect a rash to be, but there is not. I do have dark knees that I thought were a part of the problem, but suspect a whole other issue. But the main problem are these areas, and wearing my hair up or able to wear v-neck, low cut, or even my bathing suit is very embarrassing for me. I want to bleach my skin, or do something to get rid of this. I am obese, I do have diabetes in my family but get checked often, I am 230lbs so I am obese. I am 5'5". Have had 4 children, and tubes tied. I eat a regular diet of meat, veges, fruits and such. I am bipolar and on wellbutrin and lithium, but have had the issue long before these medications entered my life. Just trying to give as much information as possible. Please help.  Wanted to add all three photos, but only could one.

[maatson]

Let me go to a closer to a treatable cause which is 'Blue neck syndrome' well amenable to Albendazole.
2000  |  Volume : 66  |  Issue : 4  |  Page : 182-184

The Blue Neck Syndrome : Nematode Larvae in Skin Scrapings

The affected skin had a dull dry matt surface with a characteristic bluish black colour, which made us call this the 'Blue neck syndrome'. Pigmentation was commonest over the back of the neck, less often along its sides and rare in front
Best wishes.
        
  

[maatson]

In fact my clinical impression here has been 'Benign acanthosis nigricans', which ofcourse has been considered as variant confluent and reticulated papillomatosis or vice versa!

[adashofblessings]

Thank you,

This is at least a foot in the right direction. I have been doing a lot of research and believe you are spot on. Haa, spot on.... get it. lol. I will make certain I get an exact diagnosis, with my doctor and dermatologist. Thank you again. Jennifer

[Bhupinder Kaur, MD]

Hello,
From the symptoms it can be tinea versicolor but the possibility of confluent and reticulated papillomatosis also needs to be ruled out. The lesions usually appear between the breasts and in the midline of the back and gradually spread over the breasts, to the neck, armpits and abdomen. It is more common in young women than in men and can start after puberty.

I suggest you to get an evaluation done from a dermatologist to confirm the diagnosis.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.