Hi, your husband is having recurrent apthous ulcers. The cause for the same are multiple factorial, includes genetics, nutritional deficiencies, stress, trauma, allergic contents in the tooth paste used etc.
Hoping the ulcers are there on the lip mucosa.
Kindly apply elugel over the ulcers which will prolong the appearance of ulcers again.
For pain relief apply dologel over the ulcers.
Add a multivitamin tablet after consulting a dentist.
Next Steps
have a check about any recent change in tooth paste, how frequent the ulcers come( on a cyclic basis?).
Health Tips
Nothing to be afraid of. symptomatic treatment will suffice rather taking oral drugs if situation is manageable.
hope he gets well soon.