What homeopathic medicines should I have to subside my hives problem?

Hello doctor,

From December last year, I was sometimes having mosquito-like bites (swelling and itching) over my chest and back at midnight which I thought to be insect bites. I started using anti-allergy pills which would subside the problem. I had Montair LC on and off for 20 days but the problem used to come back. Gradually, I realized these are not insect bites and these pin-like swelling which only goes away by anti-allergy is hives/urticaria. Though my problem is not very severe, but it is gradually increasing. I keep a beard and my bearded area now gets hives too. As soon as I have my breakfast, I start having these eruptions (earlier it only used to happen at night). They are more of a burning nature and a little itchy.

I exercise a lot and I am very regular at the gym and sometimes as soon as I am done with my gym, my body is very sweaty and I start having hives. Even after having a bath (over the body) and after washing face (on the face). I follow a strict diet. I do not administer food after 8 in the evening. I try to have anything I like during the daytime for breakfast and lunch. I am very fond of eating dry fruits and sweets like chocolates, biscuits, and ice creams. I crave sweets and salty things during the day.

I would also like to tell you that in the month of January, I was diagnosed with gastritis with small ulcers (irritable bowel syndrome). For that, I every day have one spoon milk of magnesia syrup before sleeping. I still sometimes have gastritis problems where I have a sudden urge to pass a large amount of gas through burping and farting which is generally triggered by raw onion and garlic. But, I started using probiotics which provided a kind of relief for my gastritis.

I would like to ask you which foods I should ignore and what homeopathic medicine should I have to subside my hives problem. Please have a look at the picture of the hives I have attached.

Hello doctor,

Thank you for your reply.

But I just want to inform you that the pictures I sent you were not of mosquito bites but the allergy which happens on its own after bath/after gym/at midnight or after having breakfast. I thought it to be mosquito bites as it looks like that but later got to know it is urticaria though not a severe kind. When allergy happens, it happens simultaneously at different parts of the body. So, shall I go in for the medicines you above prescribed or some other medicine? Also, please tell the potency of the same.