Small bumps can be caused by oral herpes simplex virus complex, allergic reactions, early stage syphilis, canker
sores, bacterial infections or tuberculosis. Immune disorders can also cause
tongue bumps. Mouth cancer can cause a lump or area of thickened skin on the side of your tongue. A clinical examination is must. Treatment will depend on the underlying cause. Seek medical opinion. Keep me posted.
Best luck and regards!