Single reaccuring mesquito like bump that itch appear on the same spot comes and go sometime weekly or once every two week what is it?

The single recurring mosquito-like bump that itches and appears on the same spot could be several different conditions. These include:

1. Insect bite or sting: This is the most common cause of itchy bumps that come and go. Insect bites and stings often cause a raised, itchy bump that can last for several days to weeks.

2. Allergic reaction: An allergic reaction to something you have come into contact with, such as a food, medication, or plant, can also cause itchy bumps. Allergic reactions can range in severity from mild to life-threatening.

3. Hives: Hives are a type of skin rash that can cause itchy, red, raised bumps. Hives can be caused by a variety of factors, including allergies, certain medications, and infections.

4. Eczema: Eczema is a chronic skin condition that can cause dry, itchy, inflamed patches of skin. Eczema can be caused by a variety of factors, including genetics, environmental triggers, and stress.

5. Psoriasis: Psoriasis is a chronic skin condition that causes red, scaly patches of skin. Psoriasis can be caused by a variety of factors, including genetics, environmental triggers, and stress.

If you are experiencing a single recurring mosquito-like bump that itches and appears on the same spot, it is important to see a doctor to get a diagnosis and appropriate treatment.