This can be achieved using hook_node_view
<?php
function ji_custom_node_view($node, $view_mode, $langcode) {
if($view_mode != 'full'){
return;
}
switch ($node->type) {
case 'blood_donor_form':
foreach ($node->content as $field_name => $field_options) {
if(isset($field_options['#title']) && isset($field_options[0]['markup'])) {
$node->content["$field_name"]['#title'] = $field_options['#title']
."".$field_options[0]['markup']['#suffix']."";
unset($node->content["$field_name"][0]['markup']['#suffix']);
}
}
break;
}
}
?>
The code alters each field attaching the description just after the label of the field, if present. Also prefixes with a div class for custom css option for the description fields.
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Similar modules
https://www.drupal.org/project/label_help