Brief Answer:
Self limiting viral exanthem
Detailed Answer:
Hello XXXXXXX
Welcome to the forum again and thanks a lot for taking pains for sending additional information with pictures.
Now after thoroughly analyzing the pictures and correlating all the facts I can make a diagnosis of “ Viral Exanthem” due to “
Pityriasis rosea”.
To tell you simply Pityriasis rosea is a
viral rash which is an acute, self-limiting disease, most often considered to be due to herpes group of virus and that is why initially the type of appearance resembles
chicken pox ( as you got confused with chicken pox because both pityriasis rosea and chicken pox belongs to same group of virus).
It affects mainly children and young adults as in your son’s case, and characterized by a distinctive skin eruption and minimal constitutional symptoms. It is typically seen in cold weather.
It is a sharply defined, erythematous(reddish to pink), round or oval plaque, soon covered by fine scale. General eruption begins to appear in crops at 2 to 3-day intervals over a week or 10 days. Less often, new lesions continue to develop for several weeks.
It is different form chicken pox in the sense that it never presents as vesicle or bulla or yellow pus colored lesions.
The lesions are usually said to be confined to the trunk, the base of the neck as I can see the same in your son's case. Less commonly can come on upper third of the arms and legs or infrequently it can come on rest of the body also if persists for more than few weeks. So if these progress to other side then do not be pancky for the same.
In general the condition remains for 2-6 weeks and then subsides by itself. So in your son it may remain for next few weeks of period an then will subside by its own.
The common asymptomatic and self-limiting cases require no treatment. So in your son’s case if it is not spreading very fast or if the itching is not troublesome then there is no need of any type of treatment.
If itch is troublesome, or the appearance is distressing, then a
topical steroid cream such as
mometasone or
fluticasone cream can be applied. Apply in very thin amount so that it should be visible to the naked eye.
Additionally an antihistaminic tablet such as
Loratadine (Claritin or lorfast) can be take for 1-2 times or even up to three time if the itching is troublesome.
Let him wear cotton clothes not synthetic one. Let him wear cotton clothes under woolens. He can eat whatever he likes to to enjoy his vacations as there is no effect of any food items in his condition.
Do not worry your son will be alright soon.
I hope these information's will help you. If you have further queries I will be happy to help.
"Wish you good health and early recovery from the problem of your son"
Regards,
Dr Sanjay Kumar Kanodia
MD (Dermatology)