red spot on my skin

hellooo everyone..im 24 years old ..i have this red spot on my skin when i got back from holiday in Phuket,Thailand.it start on redness comes with red spot,sometimes it becomes itchy but not really bad itchy,skin are very dryness.some of my friend say its cause by water allergy & some are seafood.now the allegy were like infect on all my body skin..it feel uncomfortable to me.i use calamine to give my skin cool down but it only work at temporary..can you all help me any treatment should i take?? or ant lotion or medicine should i get..thanks.. ;)

[Dr Rajput]

Hi, welcome to the forum, as this is generalized symptoms, it needs detailed evaluation. The possibilities needed to be ruled out are Xerosis (dryness of skin), Atopic dermatitis, Contact dermatitis and Lichen simplex chronicus.

Xerosis can be seen due to frequent bathing (particularly hot baths and showers), and high temperatures with relatively low humidity such as the environment produced by home heating in the winter. Other causes are allergic dermatitis secondary to exposure to allergen or irritant. You need to look for particular allergens which would be responsible for such symptoms. You need to avoid further exposure.

You also need to rule out systemic conditions like renal disease, Cholestasis etc. which is associated with itching.

You need to use emollients regularly, anti histaminic against prescription will help to reduce the itching, and Topical steroid is helpful.

I suggest you to consult dermatologist. Take care and regards.