Hello,
I can understand your concern for rash on head and chest after taking
Amoxicillin.
The fisrt and most importat part is that Amoxicillin is never a drug to be used in anxiety.
Amoxicillin can not cause the type of rash you have decribed. After reading your query the closest possibility of your problem appears to be "allergic dermatitis". This is a condition caused by bursting of allergy producing cells known as "mast cells". As the chemical inside them is released causes the kind of rash which you mentioned.
There are many factors inducing the increased number and activity of these cells.
Kindly follow the suggestions below:
-Apply
fluticasone cream 2 times a day.
-You can do cold water compresses to reduce the intensity of itching.
-Do not scratch or rub the skin as it can lead to further aggravation.
-Avoid stress of any type, especially avoid
constipation by eating fiber rich diet containing salads and fruits.
-you can take oral anti histamine like
loratadine or levocetrizine under medial advise.
Despite above measures if the problem is not getting better then it is better to
consult a dermatologist for best guidance.
Take care.