Fresh from the Epsom salts bath Sina laid back on the bed to let me attend to her rash. I pulled the towel apart so she was naked, ready for me to apply the lotion given me by the doctor. The girl was bright red between her legs, her skin glowed angerly, her vagina was itchy and sore and I had to treat her with the antiseptic cream. The doctor gave the rash some Latin name but I couldn’t repeat it, I just knew she complained that it itched like hell, and burned to the touch. It wasn’t a venereal disease, but a rare viral infection; nothing fatal, but we don’t know where she picked it up. Best guess was at the water park. She wasn’t contagious, but still, my daughter was hurting and I felt sympathy and empathy for her. She got a vaccine shot at the clinic then we had to follow up with the cream twice a day until the affliction went away. She spread her legs wide to let me wipe her body with the cream. I put on a latex glove and daubed a generous blob on my fingers then set to work. I looked at her nudity then into her eyes, “God, this is so embarrassing, are you ready?”

My daughter Sina sighed, “It’s okay dad, right now I’d let a Catholic Priest see me like this.”

I smiled at her, I wasn’t really embarrassed, but needed her to think touching her naked body would be awkward and uncomfortable. The physician’s assistant had shaved my daughter’s pubic hair so it could not irritate her and she might heal faster. I massaged the cream over the insides of her thighs, along the sides of her smooth slit then to end the treatment, I smoothed my slicked fingers up the split of her body then eased between her cunt lips and coated the entrance to her vagina. As I fingered her, she closed her eyes, turned mortified pink, and shivered. When I pulled off the plastic glove I asked, “Feel better?”

“Not right now, you just did that the first time. The doctor said it would go away in a few days, I hope it does.”

“Yeah, it will take time. I’ll have to do this again when you go to bed tonight, or maybe we can talk your mother into doing this.”

“You know damn well she won’t touch me, she’s afraid she will catch whatever I have.” My wife was a hardcore hypochondriac and already refused to come near the girl as long as she was sore. “Will I have to take another bath?”

“Not today, tomorrow, but don’t put on any panties, and wear a skirt, panties and pants would probably irritate you.” My fifteen-year-old daughter sighed, got off the bed then walked to the closet to choose a dress to put on. As she moved away, I watched her firm, round ass and felt a sharp thrill of non-fatherly interest in the girl.

The next morning after Sina took another medicated bath I applied the cream; she didn’t seem to be as uncomfortable as the night before. “Are you less itchy?”

She smirked, “I’ll be wearing another skirt today if that’s what you want to know. How many times do we have to do this?”

“Until the rash is gone, the doctor said it could take a few days.” I teased her with a smile, “And don’t do any twirling in the dress at school today.”

“How many is a few?”

“Don’t know sweetheart, we’ll just have to wait until you don’t itch anymore.”

Sina grumbled, “I hope you won’t hate me by then, like mom does.” As I watched her get off the bed to get dressed, hate was not what I was feeling. That evening when I greased my daughter she didn’t seem as timid as before, we were both getting used to her lying on the bed naked while I massaged the medicine onto and into her intimate anatomy.

On the third morning, after a quick bath Sina got onto her bed, “I’m ready.”

“Hey girl, why don’t you put this junk on yourself, save me the trouble.” I offered her a latex glove. She slipped it over her hand then squeezed a bit of medication on the fingers. After two swipes on the insides of her thighs, she shifted her legs, looked me in the eyes then said with a bit of tension in her voice, “You do it daddy, you know where and how to put the cream on me.”

“Are you sure?”

Sina nodded, “It’s okay, it feels better when you do it.” She took the glove off her hand then dropped it to the floor. I paused, I didn’t have another just then, they were in the bathroom and I didn’t want to use the one she dropped. Without saying anything I smeared cream on my fingers then touched her between the legs. Sina jerked slightly at the touch of my uncovered fingers then relaxed onto the bed and offered me a self-conscious grin. My daughter turned her head to the wall and closed her eyes while I finished the treatment. As I took extra care to apply the medicine, carefully feeling her vagina and legs, I was reacting physically to the girl -- I was getting a fucking hard-on. When we were done, she got off the bed, pulled a pair of cotton briefs up her legs, “I think I can wear panties now,” she told me needlessly. The sight of her sweet looking ass covered in snug bikini briefs was even more appealing than seeing her nude. She was pulling a bra up her arms as I left the room unsettled, both mentally and physically.

That night as we got ready to treat her again, I picked up a glove but Sina offered softly, “Don’t use that, it was better when you didn’t use it this morning.” I asked her if she was sure and she nodded somberly, “It felt better.”

That morning I’d used two finger tips to oil her up, that evening I used three fingers and took extra care to caress her legs and pussy. Applying medicine to my daughter was becoming more personal, less clinical, and I took extra time to care for her, she took extra care to let me take my time. When I was done coating her skin Sina put a hand over mine and whispered, “I still itch inside dad, put some in me.” With no hesitation I pushed my fuck finger into my daughter then stroked her, making sure I got the medicine where it was needed. Sina sucked her lower lip, turned her head and her entire body shivered. My prick swelled with heated blood and inappropriate attention for the sexy teen lying naked on the bed with my hand between her legs.

After Sina’s treatment that night her mother asked me, “Is she getting better?”

“I think so, the redness is gone but she has some kind of scabbed looking crust on her. She says she doesn’t itch as much, but we should keep up the treatment.”

“Well make damn sure she is totally healed; it makes me crazy to think some fucking bug is hanging around waiting to infect me.” My wife was afraid more for herself than of her daughter’s welfare. Bitch.

The next time I smeared the goop over my daughter’s legs, I told her what her mother had said, that she didn’t want ‘some fucking bug’ infecting her. Sina frowned, her eyes showed irritation with her mother, and I pushed a finger deep into her vagina. I sensed the girl liked the deep insertion so I pulled out of her then daubed a tiny bubble of medicine on two fingers then slipped both fingers into Sina. Her eyes went wide and locked on mine then she eased her legs a bit wider, giving me better access to her pussy. My cock exploded in size as I began to stroke the girl in a most non-clinical way. Sina rolled her head to the left, closed her eyes, and her ass quivered while I fingered her. “Does that still itch?” I had to ask.

She faced me again and encouraged me with a whisper, “No daddy, not right now.”

“You think you are better; we don’t have to use the cream anymore?” My daughter paused, put a hand over mine between her legs, “I don’t want the rash to come back, we should use the cream until it’s gone,” she proposed. I finger fucked my naked daughter for another minute then had to get the hell out off the bed. My nuts were crying for relief so I tried to seduce my wife but she turned me down cold.

The next day I took Sina to the clinic where she got a full exam, she was clean, no more infection. We were both relieved but just as I pulled into the garage the girl put her hand on my arm, “Dad, don’t tell mom I’m all better, not yet.”

“Why?”

“Let her think you still have to put medicine on me.”

Holy fucking Christ, what did the girl just say, what kind of hint did she give me? She wanted more intimate attention? “Okay Sina, you want me to come to your room like I need to smear you up?”

She blushed slightly and confirmed, “Yeah,” then quickly got out of the car. I spent the rest of the day avoiding my wife, the half tent in my pants was a telltale reaction to my daughter’s invitation.

Sina lied boldly to her mother, “It’s almost gone mom, I feel better but the doctor told us we need to be certain and gave us a new tube of antiseptic cream.”

“That’s good, make goddamn certain I’m not gonna get your condition, I hate being sick,” my wife said without compassion.

Sina tossed me a look loaded with exasperation for her mother as she went to her room. I followed her a few minutes later and found her standing in front of the full-length mirror, she was admiring her naked adolescent body. My daughter said when she saw me in the mirror, “Mom is such a fucking cunt, how in hell do you put up with her?” Sina turned to face me, completely at ease, “Dad, do you like me, I mean like this, with no cloths on?”

“Of course, you’re my daughter, I like you in any condition or situation.”

Sina stuttered slightly, “Ah, uh, my hair is growing back, should I shave it, leave it, or trim it like Shelia does?” Shiela was her bestie.

My cock began the transition as I watched her, when she mentioned her pussy hair my eyes drifted lower to take in the lovely vision. My daughter was developing nicely, she was close to sixteen and puberty was reforming her into a very appealing young female. She had firm c-cup tits, long shapely legs, a tight pear-shaped ass, wider hips, slim waist, compact body, and a shade of light brown pubic hair. I had to deflect the conversation, my thoughts, so even though we didn’t need to, I asked, “Are you ready for another application?”

Sina went to the bed, laid on her back and asked, “Dad, when you put your fingers in me, did you ruin my virginity?”

The question sent my balls on a flight of visions and fantasy, “I don’t think so, I didn’t put them in that far, I haven’t caused you to bleed.”

My daughter picked up a pillow then just before she covered her bright red face she told me, “I want you to do that, all the way.” She pulled the pillow over her face and angled her legs wide.

My heart started slamming, I got dizzy, Sina just asked me to make her a woman with my fingers and I fucking near bolted from her room, “I don’t know girl, that’s pretty radical, doing something like that could cause a lot of problems for us.”

She moved the pillow, “Daddy, I’m not going to tell anyone, fuck me with your fingers, I want to feel it.”

I was operating in a stupor, the wording of her wish and slammed into my ears overcoming any reluctance, “Would it be okay to take my pants off, I can tell you, I will get very uncomfortable very quickly if I don’t.”

She looked up at me, a sly smile slipped onto her lips, “It’s only fair.”

I shot a quick nervous glance at the bedroom door, “You know, if your mother came in and we are both nude, it would be a very unhealthy family scene.”

Sina also looked to her closed door, “The bitch won’t come in, you know goddamn well she thinks I’m fucking viral,” again her expression surprised me, but also inspired me, “take it all off.”

I stood next to my daughter and stripped to bare skin. My cock was as hard as it had ever been and when I dropped my boxers Sina got her first look, I am close to eight inches and thickly round and was pointed at an angle toward the ceiling. My balls were packed tight against the base of my cock. I was curious, “Have you seen a hard-on before?”

She lifted her eyes to my face, she’d didn’t look uncomfortable, “No.”

I sat on the bed next to her and picked up the tube of antiseptic, Sina uttered, “I don’t need that.”

“What do you need?”

She bloomed light red from cheeks to tits and stuttered her true wish, “Ah, um, I can get off with my hands but I want you to do that for me.”

My cock pulsed a stream of lube which dribbled to the bed, I got crude, “You want me to finger fuck you, give you an orgasm with my hand?” The blush deepened as she nodded silently. I slipped my right hand between her legs and started caressing her pussy.

Sina’s eye lids fluttered slightly then she turned her head and picked out a spot on the wall to focus on while I petted her cunt. Her fingers curled into a loose fist and she arched her back then widened her legs. I was caressing her slit and felt how her pussy was getting wet, warmer, the girl was experiencing a strong flareup of sexual sensations. She opened her mouth, licked her lips then turned to look at me again. As I slipped two fingers into her, she moved her right hand to my leg then graced my erection with her fingers, “Touch it Sina, hold it.”

Without words the girl wrapped her fingers around my stone hard cock and began to tug on it lightly. I sat on the bed next to my daughter and masturbated her while she got more aggressive about pulling on my hard-on. As the minutes passed the girl’s pussy became wet enough my fingers were slipping into her with no friction, she was vibrating as if she had an electrical current running through her. Sina put a strangle hold on me then started groaning as her body shook and vibrated. As her orgasm overloaded her nerves my erection overloaded and I shot four surges of semen over her hand and across her stomach. When I was done convulsing, I got off the bed and retreated to her bathroom to clean up, get dressed, and grapple with the iniquity what the hell I had just done. I didn’t want to go back into her room, I was ashamed of what I did with my daughter but had to. When I came back into the bedroom Sina had drawn a blanket over her nudity and watched me with cautious eyes, “Daddy, don’t tell momma what we did.”