Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems that appearance of random bug bites along with
severe itching and also walking on the beach can be due to
mite infestation causing a condition known as Scabies..
It seems to be most probable cause..
While other cause can be
allergic reaction to some unknown allergen..
I would suggest you to consult an Allergist or Infectious Medicine Specialist and get evaluated and a thorough clinical evaluation and investigations like
blood test can help in diagnosis and treatment can be planned accordingly..
In case of Scabies topical lotion containing Premethrin and oral intake of
Ivermectin can be advised..
You can also be advised oral anti allergics like Levocetrizine to relieve itching..
In case if it is due to allergic reaction, blood tests to rule out the cause of allergic reaction has to be done and avoiding exposure to allergen and taking anti allergic medicines and steroids will help..
Topical application of steroid ointments, cool compresses will help..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.