Multiple painful ulcers on tongue are seen in all except
**Core Concept**
Painful ulcers on the tongue, also known as aphthous ulcers or canker sores, are a common oral mucosal condition. The exact cause is multifactorial, involving immune system dysfunction, local trauma, and nutritional deficiencies.
**Why the Correct Answer is Right**
The correct answer involves a condition characterized by recurrent, painful, and shallow ulcers on the tongue, lips, and oral mucosa. This condition is known as **Recurrent Aphthous Stomatitis (RAS)**. The exact pathophysiology is unclear, but it is believed to involve an abnormal immune response, with increased levels of pro-inflammatory cytokines and decreased levels of anti-inflammatory cytokines. The condition is often triggered by stress, anxiety, hormonal changes, and certain food items.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is a type of oral cancer, specifically **Squamous Cell Carcinoma (SCC)**, which can present as a painful ulcer on the tongue. However, SCC is typically a deeper, more irregular ulceration with a higher risk of metastasis.
**Option B:** **Behçet's disease** is a form of vasculitis that can present with oral ulcers, but it is typically accompanied by genital ulcers, uveitis, and other systemic symptoms.
**Option C:** **Pemphigus vulgaris** is a chronic autoimmune disease characterized by the formation of blisters on the skin and mucous membranes, including the oral cavity. However, these blisters are typically not painful and are often accompanied by a history of skin lesions.
**Option D:** **Oral lichen planus** is a chronic inflammatory condition that can present with white lesions on the tongue and oral mucosa, but it is typically not painful and is often accompanied by a history of skin lesions.
**Clinical Pearl / High-Yield Fact**
Aphthous ulcers are often associated with stress, anxiety, and hormonal changes, making them a common complaint in patients with anxiety disorders or undergoing hormonal therapy.
**Correct Answer:** None of the above options are correct, as all can present with painful ulcers on the tongue. However, if I must choose, **Correct Answer:** A. Squamous Cell Carcinoma (SCC) is the most likely incorrect option, as it is the only option that represents a type of cancer.