<p data-start="300" data-end="586" style="caret-color: rgb(0, 0, 0);"><font color="#636363">You should also seek professional review if:</font></p><ul data-start="587" data-end="937" style="caret-color: rgb(0, 0, 0);"><li data-start="587" data-end="672"><p data-start="589" data-end="672"><font color="#636363">Your&nbsp;<span data-start="594" data-end="644">treatment duration reaches or exceeds 3 months</span>&nbsp;without visible progress.</font></p></li><li data-start="673" data-end="738"><p data-start="675" data-end="738"><font color="#636363">The&nbsp;<span data-start="679" data-end="715">infection spreads to other nails</span>&nbsp;or surrounding skin.</font></p></li><li data-start="739" data-end="827"><p data-start="741" data-end="827"><font color="#636363">The&nbsp;<span data-start="745" data-end="794">nail becomes painful, swollen, or discoloured</span>&nbsp;beyond normal fungal symptoms.</font></p></li><li data-start="828" data-end="937"><p data-start="830" data-end="937"><font color="#636363">You notice&nbsp;<span data-start="841" data-end="857">side effects</span>&nbsp;such as irritation, redness, or an allergic reaction around the treated area.</font></p></li></ul>