Differentiate herpetic ulcer and recurrent aphthous ulcer ???

Herpetic Ulcers:

Causative Agent: Herpes simplex virus (HSV).

Appearance: Painful blisters filled with fluid.

Contagious: Yes, can be transmitted through contact.

Location: Often on the lips or genital area.

Recurrence: Can recur, especially during periods of stress.

Healing Time: Tends to heal within a couple of weeks.

Recurrent Aphthous Ulcers:

Causative Agent: Not viral; exact cause is unclear.

Appearance: Small, shallow sores.

Contagious: No, not contagious.

Location: Typically inside the mouth.

Recurrence: Recurs periodically, triggers may vary.

Healing Time: Usually heals within 1-2 weeks.