Both can present with blisters. With herpes, lesions that look like blisters are frequent, very prone to ulceration, and cause a burning sensation. With eczema, blisters are rare, ulceration is exceptional, and itching is the primary symptom.

What does ulcerated herpes look like?

At first, the sores look similar to small bumps or pimples before developing into pus-filled blisters. These may be red, yellow or white. Once they burst, a clear or yellow liquid will run out, before the blister develops a yellow crust and heals.

What can be mistaken for herpes ulcer?

Genital herpes can cause genital sores (but not always) and can be confused with other conditions such as syphilis, genital warts (HPV), chancroid, Lymphogranuloma venereum, bacterial vaginosis, yeast infection, irritation from shaving, ingrown hairs, pimples, molluscum contagiosum, and others.