A tongue that feels rough, gets caught between the teeth, and develops blisters may be due to irritation, teeth misalignment, or conditions like Glossitis or recurrent Aphthous ulcers. Avoid spicy/hot foods, maintain good oral hygiene, and use soothing gels or a vitamin B complex supplement if needed. Since repeated trauma from teeth can worsen it, a dental check-up is important to look for sharp edges or alignment issues, and consult a doctor if ulcers persist or worsen.