The user is experiencing scalp irritation and increased hair loss while on vacation, possibly due to hard water and sun exposure. They have stopped using a minoxidil and finasteride spray due to burning sensations and are using a prescribed betamethasone and salicylic acid solution along with ketoconazole shampoo.
The user noticed increased hair thinning and scalp redness on one side of their temple. They are seeking advice on what this could be and how to address it.