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18 years
Hello doctor i have acne and dark spots on my back amd chest and the top of my hands since 4 years or more and i went to many doctors and used many medicines but i didnt get any benefit.hope u help.:)
Jun 18, 2015

Dr. Zakia Dimassi Pediatrics
What were the medications you used?
Dr. Rania Mousa General Medicine
There are several causes when we talk about pimples or acne on body areas ,some are infections others may be allergies ,and all conditions have different causes .these are two condition most to be in your case :

>>A condition named ""Pityrosporum folliculitis"" it is a condition where the yeast, pityrosporum, gets down into the hair follicles and multiplies, setting up an itchy, acne-like eruption. It is especially common in the cape distribution (upper chest, upper back) and the pimples are pinhead sized and uniform
The itch tends to come in episodes, accompanied by a stinging sensation. Some patients notice the itch is worse after sweat inducing exercise or after a hot shower. When scratched, the spots may display a local hive-like reaction with a surrounding red flare.
Treatment must deal with both the yeast overgrowth and any predisposing factors, otherwise the condition will recur. Unfortunately we often either do not know, or cannot correct, all the factors that make one susceptible so the condition has a tendency to return once the anti-yeast treatment is stopped.
Topical therapy is not always effective, and may be worth a try. These include Nizoral or Selsun shampoos, applied for about 10 minutes and washed off in the shower. This is repeated once a week
Oral treatments are the most effective. The two used are Nizoral and Sporonox. One will need to wait a week or two for clearing, and recurrences are to be expected

>>Other possibility is urticaria
One possibility is urticaria, also known as hives or nettle or heat rash, which presents as severe itching associated with the formation of the white bumps or wheals over the skin.
The bumps can be very small spots or larger and may merge to form large raised lumps that are usually very hot and itchy.
The rash may appear only in certain areas of the body, but can be more widespread when severe.
Urticaria can occur for a variety of reasons.
Skin irritation through contact with certain plants or insects.
Skin reaction to something that has been eaten such as eggs or nuts.
Skin reaction to drugs, most commonly aspirin or penicillin.
Skin's response to cold or sunlight.
Skin's reaction to sweating bought on by exercise or heat.
The condition can be effectively treated and is only rarely serious if the rash occurs in or around the mouth and is accompanied by swelling.
This can be very serious as the air passage may be blocked by the swelling of the tongue or the throat – known as angioneurotic oedema.
Should this happen, it is essential to get medical assistance immediately.
Antihistamines are the usual first line of treatment.
While waiting to see your doctor, the use of simple moisturisers such as aqueous cream and the addition of emollients to the bath water can be of help.

IN however you must check with a doctor to give the effective treatment for your case and severity depending on your symptoms and medical condition .
Dr. Mirna Waked Pulmonology
Hello I am not a dermatologist so the answers of my colleagues are more precious. Though I can reccomend if no valid results with the classical approaches you need to rule out some food intolerance